{"id":14,"date":"2023-09-17T11:11:04","date_gmt":"2023-09-17T11:11:04","guid":{"rendered":"https:\/\/mathority.org\/id\/operasi-dengan-fungsi-penambahan-pembagian-perkalian-pengurangan\/"},"modified":"2023-09-17T11:11:04","modified_gmt":"2023-09-17T11:11:04","slug":"operasi-dengan-fungsi-penambahan-pembagian-perkalian-pengurangan","status":"publish","type":"post","link":"https:\/\/mathority.org\/id\/operasi-dengan-fungsi-penambahan-pembagian-perkalian-pengurangan\/","title":{"rendered":"Operasi dengan fungsi: penjumlahan, pengurangan, perkalian, pembagian dan komposisi"},"content":{"rendered":"<p>Pada artikel ini kami menjelaskan operasi apa saja yang dapat dilakukan dengan fungsi. Anda akan dapat melihat penjelasan serta latihan penyelesaian operasi dengan fungsi. Dan terakhir, Anda akan menemukan properti operasi dengan fungsi. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%c2%bfcuales-son-las-operaciones-con-funciones\"><\/span> Apa yang dimaksud dengan operasi dengan fungsi?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> <strong>Anda dapat melakukan 5 jenis operasi berbeda dengan fungsi: penjumlahan, pengurangan, perkalian, pembagian, dan komposisi.<\/strong> Artinya, dua fungsi dapat dijumlahkan, dikurangi, dikalikan, dibagi, atau dikomposisi.<\/p>\n<p> Selanjutnya kita akan melihat bagaimana setiap jenis operasi dilakukan beserta fungsi dan karakteristiknya masing-masing.<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"suma-de-funciones\"><\/span> Jumlah fungsi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Nilai <strong>penjumlahan (atau penjumlahan) dua fungsi<\/strong> sama dengan jumlah nilai masing-masing fungsi. Dengan kata lain, untuk menghitung citra suatu fungsi penjumlahan, cukup tambahkan citra fungsi-fungsi yang terlibat dalam operasi tersebut.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-05d79929a6f09f9747f92a0485e045c6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(f+g)(x)=f(x)+g(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"190\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Selanjutnya, daerah asal penjumlahan dua fungsi merupakan perpotongan daerah asal setiap fungsi yang dijumlahkan.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1d672f546b07792336a3c0df21714035_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f+g)=\\text{Dom}(f)\\cap\\text{Dom}(g)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"256\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Mari kita lihat bagaimana dua fungsi ditambahkan menggunakan sebuah contoh:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-eb89c6f33e5dda0aa251134d7fb7515d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=x^2+1 \\qquad g(x)=\\log(x-1)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"275\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Kami pertama-tama menambahkan dua fungsi:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3a6973d112f91431b92068e09e2e52f2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(f+g)(x)=f(x)+g(x)=x^2+1+\\log(x-1)\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"361\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Dan sekarang kita menemukan domain dari fungsi penjumlahan. Untuk melakukan ini, kami menghitung domain setiap fungsi secara terpisah:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7d28f947af0d791ef966ef6db609b2dd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f)=\\mathbb{R}\\qquad\\text{Dom}(g)=(1,+\\infty)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"279\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> <span style=\"color:#ff951b\">\u27a4<\/span> <strong>Lihat:<\/strong> <span style=\"text-decoration: underline;\"><a href=\"https:\/\/mathority.org\/id\">cara menghitung domain suatu fungsi<\/a><\/span><\/p>\n<p> Maka domain dari fungsi yang dihasilkan dari operasi tersebut adalah:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6266cd082c8e8012781d9c432803b97c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f+g)=\\text{Dom}(f)\\cap\\text{Dom}(g)=(1,+\\infty)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"343\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Setiap operasi dengan fungsi harus disertai dengan domainnya untuk menentukan hasilnya secara lengkap.<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"resta-de-funciones\"><\/span> Pengurangan fungsi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Bayangan <strong>pengurangan (atau selisih) dua fungsi<\/strong> adalah pengurangan bayangan setiap fungsi yang ikut serta dalam operasi:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-47e4822be6bdbfbe3c5692b11ffde668_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(f-g)(x)=f(x)-g(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"190\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Seperti halnya fungsi penjumlahan, domain pengurangan dua fungsi ekuivalen dengan perpotongan domain masing-masing fungsi.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-12f87e8f009c4aff19495536484faf38_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f-g)=\\text{Dom}(f)\\cap\\text{Dom}(g)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"256\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Jadi, jika suatu fungsi tidak terdefinisi pada nilai tertentu dari variabel bebas x, maka fungsi hasil pengurangan juga tidak akan terdefinisi.<\/p>\n<p> Mari kita lihat bagaimana dua fungsi dikurangi melalui sebuah contoh:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f01e404815edd977e137b37371cb6e05_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=\\sqrt{x}\\qquad g(x)=\\cfrac{3}{x-4}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"218\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p> Pertama-tama kita kurangi kedua fungsi tersebut:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-e78ab8524f406ba3c30077c979d377ee_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(f-g)(x)=f(x)-g(x)=\\sqrt{x}-\\cfrac{3}{x-4}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"304\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p> Dan kemudian kita menentukan domain dari fungsi pengurangan: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7efe9d2026c53d15e8f4cd4f34b0bd30_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f)=[0,+\\infty)\\qquad\\text{Dom}(g)=\\mathbb{R}-\\{4\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"325\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a54037cea9dc3305838c3bbf1bdf0d22_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f-g)=\\text{Dom}(f)\\cap\\text{Dom}(g)=[0,4)\\cup (4,+\\infty)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"400\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"producto-de-funciones\"><\/span> Produk andalan<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Untuk menghitung <strong>hasil kali atau (perkalian) dua fungsi<\/strong> , Anda cukup mengalikan ekspresi masing-masing fungsi.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c222808349e646fd86841f9bb7a38004_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(f\\cdot g)(x)=f(x)\\cdot g(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"172\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Di sisi lain, domain dari fungsi hasil kali adalah himpunan perpotongan domain dari setiap fungsi yang dikalikan.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8b74f4595a7baae6c41076fe38b1543d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f\\cdot g)=\\text{Dom}(f)\\cap\\text{Dom}(g)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"248\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Misalnya, jika kita mempunyai dua fungsi berikut:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3be55eb65d1ffa1084bbd6f06735c2f8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=\\sqrt[3]{x^2-1}\\qquad g(x)=\\cfrac{2}{3x+6}\" title=\"Rendered by QuickLaTeX.com\" height=\"40\" width=\"266\" style=\"vertical-align: -14px;\"><\/p>\n<\/p>\n<p> Pertama, kami menjalankan pengoperasian produk dengan dua fungsi:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b67aa52a71b46330da18ffc851e28633_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(f\\cdot g)(x)=f(x)\\cdot g(x)=\\sqrt[3]{x^2-1}\\cdot\\cfrac{2}{3x+6}=\\cfrac{2\\sqrt[3]{x^2-1}}{3x+6}\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"425\" style=\"vertical-align: -14px;\"><\/p>\n<\/p>\n<p> Dan terakhir, kita mencari domain dari fungsi yang dihasilkan dari operasi tersebut: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-05c45e48da37aeb7182e6f91d6af9710_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f)=\\mathbb{R}\\qquad\\text{Dom}(g)=\\mathbb{R}-\\{-2\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"292\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7afa18c599135168980fa659c224af54_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f\\cdot g)=\\text{Dom}(f)\\cap\\text{Dom}(g)=(-\\infty,-2)\\cup (-2,+\\infty)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"443\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"division-de-funciones\"><\/span> Distribusi fungsi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Hasil numerik dari <strong>pembagian (atau hasil bagi) dua fungsi<\/strong> sesuai dengan persamaan berikut:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-96cbf5f56799b59d7d3561d8317b5843_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\left(\\frac{f}{g}\\right)(x)=\\frac{f(x)}{g(x)}\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"125\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<p> Namun domain pembagian dua fungsi adalah himpunan perpotongan domain masing-masing fungsi dikurangi semua x yang menghilangkan fungsi yang berperan sebagai pembagi, karena jika tidak maka akan diperoleh ketidakpastian.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-bf8de882e1d983090cbb3ee8f9481b26_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\text{Dom}\\left(\\frac{f}{g}\\right)(x)=\\text{Dom}(f)\\cap\\text{Dom}(g)-\\{x:g(x)=0\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"402\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<p> Sebagai contoh, kita akan membagi fungsi-fungsi berikut:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-943c191746edc19963301033120e709e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=5^x \\qquad g(x)=x-3\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"208\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Pembagian fungsinya adalah sebagai berikut:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6eae89de60ef299ba6f5fe719a73d3c8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\left(\\frac{f}{g}\\right)(x)=\\frac{f(x)}{g(x)}=\\cfrac{5^x}{x-3}\" title=\"Rendered by QuickLaTeX.com\" height=\"44\" width=\"193\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<p> Sebaliknya, domain setiap fungsi secara terpisah terdiri dari semua bilangan real<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ce037318101ca86303b9aa66a1901cfb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(f)=\\mathbb{R}\\qquad\\text{Dom}(g)=\\mathbb{R}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"230\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Namun, karena penyebut suatu pecahan tidak boleh ada nol, maka dalam domain fungsi yang dihasilkan kita harus menghilangkan semua nilai yang menghilangkan penyebutnya (x=3). <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-640a8e1e712348e99aed1f091cc1d2e1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\text{Dom}\\left(\\frac{f}{g}\\right)(x)=\\text{Dom}(f)\\cap\\text{Dom}(g)-\\{x:g(x)=0\\}=\\mathbb{R}-\\{3\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"486\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"composicion-de-funciones\"><\/span> Komposisi fungsi<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p> Komposisi fungsi merupakan operasi yang paling sulit diselesaikan, karena merupakan konsep yang paling rumit.<\/p>\n<p> <strong>Komposisi fungsi<\/strong> terdiri dari penerapan dua fungsi secara berurutan. Secara aljabar, komposisi dua fungsi tersebut dinyatakan sebagai berikut:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3b528c2a40063326606b5f32aa713a48_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(g\\circ f)(x)=g\\Bigl(f(x)\\Bigr)\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"159\" style=\"vertical-align: -11px;\"><\/p>\n<\/p>\n<p> Di sisi lain, domain komposisi fungsi<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a1e321d1fe5674142070eefd17519b77_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(g\\circ f)(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"72\" style=\"vertical-align: -5px;\"><\/p>\n<p> ekuivalen dengan himpunan semua nilai x pada domain fungsi<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9c09a708375fde2676da319bcdfe8b24_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"10\" style=\"vertical-align: -4px;\"><\/p>\n<p> seperti<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a7ee323bc5a3f73ad5e066b13bed5504_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"34\" style=\"vertical-align: -5px;\"><\/p>\n<p> termasuk dalam domain fungsi<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dce98a79808d5694e9c7a9f4545e45f2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"g.\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"13\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-cf27df12b66bbfdc7516fe47410cbf5c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(g\\circ f)=\\{x\\in\\text{Dom}(f)\\ | \\ f(x)\\in \\text{Dom}(g)\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"354\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Misalnya, diberikan dua fungsi berikut:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-aef98c61f474a5f3202c4b2003460e39_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=x^2+1 \\qquad g(x)=3x-4\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"248\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Untuk mencari fungsi gabungan<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9c09a708375fde2676da319bcdfe8b24_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"10\" style=\"vertical-align: -4px;\"><\/p>\n<p> diikuti oleh<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d208fd391fa57c168dc0f151de829fee_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"g\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"9\" style=\"vertical-align: -4px;\"><\/p>\n<p> kita perlu mengganti ekspresi<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a7ee323bc5a3f73ad5e066b13bed5504_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"34\" style=\"vertical-align: -5px;\"><\/p>\n<p> dimana ada satu<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p> dalam ekspresi<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0f8c9f85fa0ccfcfaa5c014024ef5afb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"g(x):\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"42\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f48079d61cf80409fdbf6610b5724189_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{aligned}(g\\circ f)(x)&amp;=g\\Bigl(f(x)\\Bigr)\\\\[2ex]&amp;= g\\Bigl(x^2+1\\Bigr)\\\\[2ex]&amp;=3(x^2+1)-4\\\\[2ex]&amp;=3x^2+3-4\\\\[2ex]&amp;=3x^2-1\\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"211\" width=\"198\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Dalam hal ini domain kedua fungsi tersebut seluruhnya terdiri dari bilangan real, sehingga domain dari fungsi komposit tersebut juga akan terdiri dari bilangan real.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0fde0ee091521197399bcfb6f5a25e0d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom}(g\\circ f)=\\mathbb{R}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"124\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Seperti yang Anda lihat, membuat fungsi bukanlah operasi yang mudah untuk dipahami. Oleh karena itu, kami menyarankan Anda berlatih latihan komposisi fungsi berikut:<\/p>\n<p> <span style=\"color:#ff951b\">\u27a4<\/span> <strong>Lihat:<\/strong> <span style=\"text-decoration: underline;\"><a href=\"https:\/\/mathority.org\/id\/komposisi-fungsi-fungsi-komposit\/\">menyelesaikan latihan tentang komposisi fungsi<\/a><\/span> <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"propiedades-de-las-operaciones-con-funciones\"><\/span> Properti operasi dengan fungsi<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Dari semua operasi dengan fungsi, jumlah dan hasil kali dicirikan oleh sifat-sifat berikut:<\/p>\n<ul>\n<li> <strong>Sifat asosiatif<\/strong> : Urutan penambahan atau perkalian 3 fungsi atau lebih tidak relevan.<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dcc11a4fb89684274cc991e28c8c41e7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)+\\bigl[g(x)+h(x)\\bigr]=\\bigl[f(x)+g(x)\\bigr]+h(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"22\" width=\"342\" style=\"vertical-align: -7px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-897f10dffa02ae69086d8181e6f2aa96_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)\\cdot \\bigl[g(x)\\cdot h(x)\\bigr]=\\bigl[f(x)\\cdot g(x)\\bigr] \\cdot h(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"22\" width=\"307\" style=\"vertical-align: -7px;\"><\/p>\n<\/p>\n<ul>\n<li> <strong>Sifat komutatif<\/strong> : urutan penjumlahan atau perkalian dua fungsi tidak mengubah hasilnya.<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-aeae9f256e25d89fd73e9231bb1052dd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)+g(x)=g(x)+f(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"201\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3c2a65bff0ccb6ccb9976e3ed252a636_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)\\cdot g(x)=g(x)\\cdot f(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"183\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<ul>\n<li> <strong>Elemen netral:<\/strong> operasi penjumlahan dan operasi produk memiliki fungsi elemen netral yang konstan\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0bce6c022ed0fc63f4659af75888f96c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"67\" style=\"vertical-align: -5px;\"><\/p>\n<p> Dan<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4e21c119443e5009abfe189df9ee4763_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"66\" style=\"vertical-align: -5px;\"><\/p>\n<p> masing-masing.<\/li>\n<\/ul>\n<ul>\n<li> <strong>Elemen simetris<\/strong> : fungsi penjumlahan mempunyai fungsi kebalikannya\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d9e2fee8a3b8710948027f726423744e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-f(x).\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"51\" style=\"vertical-align: -5px;\"><\/p>\n<\/li>\n<\/ul>\n<ul>\n<li> <strong>Sifat distributif<\/strong> : sifat ini menghubungkan jumlah dan hasil kali operasi, dan didasarkan pada persamaan berikut:<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-bbeb83744999f8dfe2ee15a3501f50ac_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)\\cdot \\bigl[g(x)+h(x)\\bigr]=f(x)\\cdot g(x)+f(x)\\cdot h(x)\" title=\"Rendered by QuickLaTeX.com\" height=\"22\" width=\"357\" style=\"vertical-align: -7px;\"><\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pada artikel ini kami menjelaskan operasi apa saja yang dapat dilakukan dengan fungsi. Anda akan dapat melihat penjelasan serta latihan penyelesaian operasi dengan fungsi. Dan terakhir, Anda akan menemukan properti operasi dengan fungsi. Apa yang dimaksud dengan operasi dengan fungsi? Anda dapat melakukan 5 jenis operasi berbeda dengan fungsi: penjumlahan, pengurangan, perkalian, pembagian, dan komposisi. &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/id\/operasi-dengan-fungsi-penambahan-pembagian-perkalian-pengurangan\/\"> <span class=\"screen-reader-text\">Operasi dengan fungsi: penjumlahan, pengurangan, perkalian, pembagian dan komposisi<\/span> Selengkapnya &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[49],"tags":[],"class_list":["post-14","post","type-post","status-publish","format-standard","hentry","category-representasi-fungsi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Operasi dengan fungsi: penjumlahan, pengurangan, perkalian, pembagian dan komposisi<\/title>\n<meta name=\"description\" content=\"Kami menjelaskan semua operasi dengan fungsi (penjumlahan, pengurangan, perkalian, pembagian, dan komposisi). \u2705 Dengan latihan yang diselesaikan pada operasi dengan fungsi. \u2705\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mathority.org\/id\/operasi-dengan-fungsi-penambahan-pembagian-perkalian-pengurangan\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Operasi dengan fungsi: penjumlahan, pengurangan, perkalian, pembagian dan komposisi\" \/>\n<meta property=\"og:description\" content=\"Kami menjelaskan semua operasi dengan fungsi (penjumlahan, pengurangan, perkalian, pembagian, dan komposisi). \u2705 Dengan latihan yang diselesaikan pada operasi dengan fungsi. \u2705\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mathority.org\/id\/operasi-dengan-fungsi-penambahan-pembagian-perkalian-pengurangan\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-17T11:11:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-05d79929a6f09f9747f92a0485e045c6_l3.png\" \/>\n<meta name=\"author\" content=\"Tim Mathority\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Ditulis oleh\" \/>\n\t<meta name=\"twitter:data1\" content=\"Tim Mathority\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimasi waktu membaca\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 menit\" \/>\n<script type=\"application\/ld+json\" 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