Pengertian fungsi logaritma adalah sebagai berikut: <\/p>\n
Dalam matematika, fungsi logaritma<\/strong> adalah fungsi yang variabel bebasnya x<\/em> merupakan bagian dari argumen logaritma. Dengan kata lain, mereka adalah sebagai berikut:<\/p>\n<\/p>\n Emas<\/p>\n<\/p>\n Ini tentu merupakan bilangan real positif dan berbeda dari 1.<\/p>\n<\/div>\n Misalnya, fungsi berikut adalah logaritma:<\/p>\n<\/p>\n Sebelum membahas tentang ciri-ciri fungsi logaritma, mari kita ulas sekilas tentang konsep logaritma:<\/p>\n dari<\/p>\n adalah elemen yang nomornya harus dinaikkan<\/p>\n sehingga hasilnya adalah angka<\/p>\n Mari kita ingat juga bahwa logaritma natural (atau logaritma natural) setara dengan logaritma yang basisnya adalah bilangan eksponensial e:<\/p>\n<\/p>\n Sebaliknya, basis biasanya dihilangkan jika nilainya 10. Jenis logaritma ini disebut logaritma desimal atau algoritma umum: <\/p>\n<\/p>\n Logaritma hanya menerima bilangan positif, sehingga domain fungsi logaritma adalah semua bilangan yang memenuhi kondisi ini.<\/p>\n<\/div>\n Sebagai contoh, kita akan menghitung domain dari fungsi logaritma berikut:<\/p>\n \n<\/p>\n Argumen logaritma harus lebih besar dari 0, karena tidak ada logaritma bilangan negatif maupun logaritma 0. Oleh karena itu, kita harus melihat kapan argumen suatu fungsi lebih besar dari nol:<\/p>\n<\/p>\n Sekarang kita selesaikan pertidaksamaan tersebut: <\/p>\n<\/p>\n Jadi argumen logaritmanya akan lebih besar dari nol jika<\/p>\n<\/p>\n lebih besar dari 2. Jadi, domain dari fungsi tersebut terdiri dari semua bilangan yang lebih besar dari 2 (tidak termasuk): <\/p>\n<\/p>\n Namun fungsinya meningkat jika basisnya berada pada interval antara nol dan satu.<\/p>\n \\bm{\\cap}<\/p>\n \\bm{\\cangkir}<\/p>\n Nous allons ensuite voir avec un exemple comment repr\u00e9senter graphiquement une fonction logarithmique.<\/p>\n ” title=”Rendered by QuickLaTeX.com” height=”217″ width=”1518″ style=”vertical-align: -5px;”><\/p>\n f(x)=\\log_2 (x-1)<\/p>\n \\log_2 (x-1)<\/p>\n x-1>0x>1<\/p>\n X<\/p>\n \\text{Dom } f = (1,+\\infty)<\/p>\n x= 1,5 \\ panah kanan panjang \\ f(1,5)=\\log_2 (1,5-1)=-1<\/p>\n x= 2 \\ panah kanan panjang \\ f(2)=\\log_2 (2-1)= 0<\/p>\n x= 3 \\ panah kanan panjang \\ f(3)=\\log_2 (3-1) = 1<\/p>\n x= 5 \\ panah kanan panjang \\ f(5)=\\log_2 (5-1) = 2<\/p>\n x= 9 \\ panah kanan panjang \\ f(9)=\\log_2 (9-1) = 3<\/p>\n \\begin{array}{c|c} x & f(x) \\\\ \\hline 1,5 & -1 \\\\ 2 & 0 \\\\ 3 & 1 \\\\ 5 & 2 \\\\ 9 & 3 \\end{array }<\/p>\n Nous vous recommandons d’utiliser une calculatrice pour trouver les points dans le tableau des valeurs, car ils ne sont pas faciles \u00e0 calculer \u00e0 la main. Cependant, dans certaines calculatrices, seuls les logarithmes en base 10 peuvent \u00eatre calcul\u00e9s, auquel cas n’oubliez pas que vous pouvez trouver le r\u00e9sultat de n’importe quel logarithme en appliquant le changement de propri\u00e9t\u00e9 de base des logarithmes :” title=”Rendered by QuickLaTeX.com” height=”19″ width=”3068″ style=”vertical-align: -5px;”><\/p>\n \\log_2 0,5 = \\cfrac{ \\log 0,5 }{ \\log 2} = -1<\/p>\n Et enfin, nous joignons les points et allongeons la fonction : <\/p>\n Notez que la fonction de droite continue de cro\u00eetre jusqu’\u00e0 l’infini. En revanche, la fonction de gauche diminue mais n’atteint jamais x=1. M\u00eame s’il s’en rapproche beaucoup, il ne le touche jamais. Cela signifie que la droite x=1 est une asymptote verticale de la fonction. <\/p>\n Calculez le domaine de la fonction logarithmique suivante : ” title=”Rendered by QuickLaTeX.com” height=”347″ width=”4961″ style=”vertical-align: -5px;”><\/p>\n f(x)= \\log_8 4x<\/p>\n Il n’existe ni le logarithme d’un nombre n\u00e9gatif ni le logarithme de 0. Il faut donc regarder quand l’argument du logarithme est sup\u00e9rieur \u00e0 0 : ” title=”Rendered by QuickLaTeX.com” height=”54″ width=”2128″ style=”vertical-align: -20px;”><\/p>\n 4x>0 x>\\cfrac{0}{4} x>0 \\mathbf{Dom } \\ \\bm{f = (0,+\\infty)}<\/p>\n Trouvez le domaine de la fonction logarithmique suivante : ” title=”Rendered by QuickLaTeX.com” height=”60″ width=”582″ style=”vertical-align: -4px;”><\/p>\n f(x)= \\log (4-x)<\/p>\n Il n’existe ni le logarithme d’un nombre n\u00e9gatif ni le logarithme de 0. Il faut donc regarder quand l’argument du logarithme est sup\u00e9rieur \u00e0 z\u00e9ro : ” title=”Rendered by QuickLaTeX.com” height=”54″ width=”2145″ style=”vertical-align: -20px;”><\/p>\n 4-x>0-x>-4x<\\cfrac{-4}{-1} = 4<\/p>\n x<4 \\mathbf{Dom } \\ \\bm{f = (-\\infty,4)}<\/p>\n Repr\u00e9sentez la fonction logarithmique suivante sur un graphique : ” title=”Rendered by QuickLaTeX.com” height=”60″ width=”582″ style=”vertical-align: -4px;”><\/p>\n f(x)= \\log_2 x<\/p>\n Tout d’abord, il faut calculer le domaine de la fonction logarithmique : ” title=”Rendered by QuickLaTeX.com” height=”54″ width=”1771″ style=”vertical-align: -20px;”><\/p>\n x>0 \\teks{Dom } f = (0,+\\infty)<\/p>\n x= 0,5 \\ \\longrightarrow \\ f(0,5)= \\log_2 0,5= -1 x= 1 \\ \\longrightarrow \\ f(1)= \\log_2 1= 0 x= 2 \\ \\longrightarrow \\ f( 2)= \\log_2 2 = 1 x= 4 \\ \\longrightarrow \\ f(4)= \\log_2 4= 2 x= 8 \\ \\longrightarrow \\ f(8)= \\log_2 8= 3<\/p>\n \\begin{array}{c|c} x & f(x) \\\\ \\hline 0,5 & -1 \\\\ 1 & 0 \\\\ 2 & 1 \\\\ 4 & 2 \\\\ 8 & 3 \\end{array }<\/p>\n Enfin, nous repr\u00e9sentons les points sur le graphique et dessinons la fonction : <\/p>\n Notez que la fonction de droite continue de cro\u00eetre jusqu’\u00e0 l’infini. Par contre, \u00e0 gauche la fonction diminue mais ne croise jamais x=0. C’est parce que la fonction a une asymptote verticale sur l’axe Y. <\/p>\n Repr\u00e9sentez graphiquement la fonction logarithmique suivante : ” title=”Rendered by QuickLaTeX.com” height=”173″ width=”3070″ style=”vertical-align: -5px;”><\/p>\n f(x)= \\log_2 (x+2)<\/p>\n La premi\u00e8re chose \u00e0 faire est de calculer le domaine de la fonction logarithmique : ” title=”Rendered by QuickLaTeX.com” height=”53″ width=”1825″ style=”vertical-align: -19px;”><\/p>\n x+2>0 x>-2 \\text{Dom } f = (-2,+\\infty)<\/p>\n x= -1,5 \\ \\longrightarrow \\ f(-1,5)= \\log_2 (-1,5+2)= -1 x= -1 \\ \\longrightarrow \\ f(-1)= \\log_2 (-1 +2)=0 x = 0 \\ \\longrightarrow \\ f(0)=\\log_2 (0+2)=1 x= 2 \\ \\longrightarrow \\ f(2)=\\log_2 (2+2)=2 x= 6 \\ \\longrightarrow \\ f( 6)=\\log_2 (6+2)=3<\/p>\n \\begin{array}{c|c} x & f(x) \\\\ \\hline -1,5 & -1 \\\\ -1 & 0 \\\\ 0 & 1 \\\\ 2 & 2 \\\\ 6 & 3 \\end {array }<\/p>\n Enfin, nous tra\u00e7ons les points sur le graphique et tra\u00e7ons la fonction : <\/p>\n Notez que la fonction de droite continue de cro\u00eetre jusqu’\u00e0 l’infini. Par contre, \u00e0 gauche la fonction diminue mais ne croise jamais x=-2. C’est parce qu’il a une asymptote verticale \u00e0 x=-2. <\/p>\n Faites la repr\u00e9sentation graphique de la fonction logarithmique suivante : ” title=”Rendered by QuickLaTeX.com” height=”195″ width=”3059″ style=”vertical-align: -5px;”><\/p>\n f(x)=\\log_3x<\/p>\n La premi\u00e8re chose \u00e0 faire est de calculer le domaine de la fonction logarithmique : ” title=”Rendered by QuickLaTeX.com” height=”53″ width=”1825″ style=”vertical-align: -19px;”><\/p>\n x>0 \\teks{Dom } f = (0,+\\infty)<\/p>\n x= 1 \\ \\longrightarrow \\ f (1)= \\log_3 1= 0 x= 3 \\ \\longrightarrow \\ f(3)= \\log_3 3= 1 x= 9 \\ \\longrightarrow \\ f(9)= \\log_3 9= 2 \\displaystyle x= \\cfrac{1}{3} \\ \\longrightarrow \\ f\\left( \\frac{1}{3} \\kanan)= \\log_3 \\frac{1}{3}= -1 \\displaystyle x= \\cfrac{1}{9} \\ \\longrightarrow \\ f\\left( \\frac{1}{9} \\kanan)= \\log_3 \\frac{1}{9}= -2<\/p>\n \\begin{array}{c|c} x & f(x) \\\\ \\hline 1 & 0 \\\\ 3 & 1 \\\\ 9 & 2 \\\\ \\frac{1}{3} & -1 \\\\[1.1 contoh] \\frac{1}{9} & -2 \\end{array}<\/p>\n Et pour finir, nous repr\u00e9sentons les points sur le graphique et peignons la fonction : <\/p>\n Notez que la fonction de droite continue de cro\u00eetre jusqu’\u00e0 l’infini. Mais \u00e0 gauche la fonction d\u00e9cro\u00eet bien qu’elle ne croise jamais x=0. C’est parce que la fonction a une asymptote verticale sur l’axe des ordonn\u00e9es. <\/p>\n Repr\u00e9sentez graphiquement la fonction suivante avec un logarithme : ” title=”Rendered by QuickLaTeX.com” height=”195″ width=”3181″ style=”vertical-align: -5px;”><\/p>\n f(x)= \\log_2 (1-x)<\/p>\n Avant de repr\u00e9senter graphiquement la fonction, il faut calculer son domaine : ” title=”Rendered by QuickLaTeX.com” height=”53″ width=”1817″ style=”vertical-align: -19px;”><\/p>\n 1-x>0-x>-1x<\\cfrac{-1}{-1} = 1<\/p>\n x<1 \\text{Dom } f = (-\\infty,1)<\/p>\n x= 0,5 \\ \\longrightarrow \\ f(0,5)= \\log_2 (1-0,5)=-1 x= 0 \\ \\longrightarrow \\ f(0)= \\log_2 (1-0)= 0 x = -1 \\ \\longrightarrow \\ f(-1)=\\log_2 (1-(-1))=1 x= -3 \\ \\longrightarrow \\ f(-3)=\\log_2 (1-(-3))= 2 x= -7 \\ \\longrightarrow \\ f(-7)=\\log_2 (1-(-7))=3<\/p>\n \\begin{array}{c|c} x & f(x) \\\\ \\hline 0,5 & -1 \\\\ 0 & 0 \\\\ -1 & 1 \\\\ -3 & 2 \\\\ -7 & 3 \\ end{ Himpunan}<\/p>\n Et pour finir, nous repr\u00e9sentons les points sur le graphique et tra\u00e7ons la fonction : <\/p>\n Notez que la fonction de gauche continue de cro\u00eetre jusqu’\u00e0 l’infini. Par contre, \u00e0 droite la fonction diminue mais ne croise jamais x=1. Par cons\u00e9quent, il a une asymptote verticale sur la droite x=1. <\/p>\n \u00c0 titre r\u00e9capitulatif, vous trouverez ci-dessous les propri\u00e9t\u00e9s des logarithmes au cas o\u00f9 vous auriez besoin d’effectuer des op\u00e9rations avec des fonctions logarithmiques :<\/p>\n ” title=”Rendered by QuickLaTeX.com” height=”195″ width=”5919″ style=”vertical-align: -5px;”><\/p>\n \\log(A\\cdot B) = \\log A + \\log B<\/p>\n ” title=”Rendered by QuickLaTeX.com” height=”41″ width=”943″ style=”vertical-align: -5px;”><\/p>\n \\displaystyle \\log \\kiri(\\frac{A}{B} \\kanan) = \\log A \u2013 \\log B<\/p>\n ” title=”Rendered by QuickLaTeX.com” height=”41″ width=”892″ style=”vertical-align: -5px;”><\/p>\n \\displaystyle \\log A^n = n\\cdot \\log A<\/p>\n ” title=”Rendered by QuickLaTeX.com” height=”41″ width=”807″ style=”vertical-align: -5px;”><\/p>\n \\displaystyle \\log \\sqrt[n]{A} =\\cfrac{\\log A}{n} $<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":" Di halaman ini Anda akan menemukan apa itu fungsi logaritma dan juga cara merepresentasikannya dalam grafik. Selain itu, Anda akan melihat semua karakteristiknya, cara menghitung domainnya dan beberapa contoh untuk lebih memahaminya. Terakhir, Anda akan dapat berlatih dengan latihan dan soal yang diselesaikan selangkah demi selangkah tentang fungsi logaritma. Apa itu fungsi logaritma? Pengertian fungsi …<\/p>\n![\"f(x)=\\log_a](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-996f68a990550949a528d4b15cd61405_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n![\"a\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5c53d6ebabdbcfa4e107550ea60b1b19_l3.png\" "\\"Rendered")
<\/p>\n![\"f(x)=\\log_5](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f5fa510df7de3c79482a4923a99fb6a0_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n\n
<\/p>\n![\"y\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0af556714940c351c933bba8cf840796_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n![\"y.\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-62f853fa6f372493298c507883a9f490_l3.png\" "\\"Rendered")
<\/p>\n<\/li>\n<\/ul>\n![\"\\log_a](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a4cde96df4335f4e0b1e222ac1e066e2_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n![\"\\ln](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a1febea2ae7232e777d779d4d0d9e56c_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n![\"\\log_{10}](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fc3f62bdc84fbd101c67c578a1a8446f_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n<\/span> Domain fungsi logaritma <\/span><\/h2>\n
![\"f(x)=\\log_3](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c74c93eb851d6a3cd260d3392b60ee6f_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n![\"2x-4](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-bc56ccadb5ea7561d024f53807c455e7_l3.png\")
0″ title=”Rendered by QuickLaTeX.com” height=”14″ width=”82″ style=”vertical-align: -2px;”><\/p>\n<\/p>\n![\"2x](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-485b0757461f520e4e2f1be32c41ce18_l3.png\")
4″ title=”Rendered by QuickLaTeX.com” height=”14″ width=”52″ style=”vertical-align: -2px;”><\/p>\n<\/p>\n![\"x](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f9babc81a8e078c9ad02c8275dc70188_l3.png\")
\\cfrac{4}{2}” title=”Rendered by QuickLaTeX.com” height=”38″ width=”45″ style=”vertical-align: -12px;”><\/p>\n<\/p>\n![\"x](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b0d114ca900168936b5c270433aff883_l3.png\")
2″ title=”Rendered by QuickLaTeX.com” height=”14″ width=”42″ style=”vertical-align: -2px;”><\/p>\n<\/p>\n![\"x\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" "\\"Rendered")
<\/p>\n![\"\\text{Dom](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7b49703709c5c665a0facc9cf6809f2f_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n<\/span> Karakteristik fungsi logaritma<\/span><\/h2>\n
\n
\n
![\"\\text{Im](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5a954b5c192478c3b7b14428ac8d5cbc_l3.png\" "\\"Rendered")
<\/p>\n<\/p>\n\n
\n
![\"(a](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-657cec64d73572dfa29fdadec8429e07_l3.png\")
1)” title=”Rendered by QuickLaTeX.com” height=”19″ width=”54″ style=”vertical-align: -5px;”><\/p>\n![\"(0](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a86971bd27ea9ede80ab8714850e2e6e_l3.png\")
\n<\/ul>\n\n
![\")](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-25490d753a225086bfae4c0bd2e51229_l3.png\" "\\"Rendered")
<\/p>\n![\")](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6c4a934b9c8c2bceca258db484fba84a_l3.png\")
\n<\/ul>\n\n
<\/span> Comment repr\u00e9senter une fonction logarithmique sur un graphique<\/span><\/h2>\n
\n
![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ee812d965d2e5bb51ccc706c6bb48c14_l3.png\" "\\"Rendered")
<\/p>\n![\"est](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3cde407a739175558132b5b8f1d89e61_l3.png\" "\\"Rendered")
<\/p>\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-732f79bb88c25303dc4895f865c02279_l3.png\" "\\"Rendered")
<\/p>\n![\"est](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4a112c9f4182790189c04241a71084ea_l3.png\" "\\"Rendered")
<\/p>\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3b33056a86d70d2c199cf3419a9a922f_l3.png\")
\n\n
![\"<\/li](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1479456dcda042ce6ce4535b63e6a69e_l3.png\")
\n<\/ul>\n\n
\n<\/ul>\n\n
\n<\/ul>\n\n
\n<\/ul>\n\n
![\"<\/li](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f6cd5e35fb4aa49ccb62bf6ccadd7936_l3.png\")
\n<\/ul>\n<\/div>\n![\"<\/div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-668bd8c58422d58a80c4879d332573d7_l3.png\")
\n<\/div>\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-62a3e468e0d43f979309ccb2878eb961_l3.png\")
:<\/strong> <\/p>\n![""]("http:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/comment-representer-ou-graphiquer-une-fonction-logarithmique.webp")
<\/figure>\n<\/div>\n!["exemple]("http:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemple-de-representation-graphique-d-une-fonction-logarithmique.webp")
<\/figure>\n<\/div>\n<\/span> Exercices r\u00e9solus sur les fonctions logarithmiques<\/span><\/h2>\n
Exercice 1<\/h3>\n
![\"\n\n<div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-be7f21b839461337f07c2c015b7aa6c6_l3.png\")
\n![\"\n\n<div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7841aa49debde7e7151641bb088d7d23_l3.png\")
<\/div>\n Exercice 2<\/h3>\n
![\"\n\n<div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-90c3709a2ba0aea2d496aab2b1ccdbda_l3.png\")
\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-21981d3c89f1f8bea140b1a2e69e27b6_l3.png\" "\\"Rendered")
<\/p>\n![\"\n\n<div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-27387c74ff58d586c654fa99b7b318f4_l3.png\")
<\/div>\n Exercice 3<\/h3>\n
![\"\n\n<div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-307282d5c0871172708032bf0f6f2cbf_l3.png\")
\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a579608a1d544ae9cdbaadc110f51dfb_l3.png\")
x<\/em> dans l’intervalle du domaine : <\/p>\n![\"<\/div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2b3f5515ef8bc341d9a5520791d8a706_l3.png\")
\n![\"<\/div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c294f5ccb6844db8d2e3dcd7a6385795_l3.png\")
\n<\/div>\n!["exercices]("http:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/polynomes-p-icone.png")
<\/figure>\n<\/div>\n Exercice 4<\/h3>\n
![\"\n\n<div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fbf0b4b613094e7e5a8882805f0814e5_l3.png\")
\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a58be6aac2dee50ca7fe9cc22cdaeaa7_l3.png\")
x<\/em> dans l’intervalle de domaine : <\/p>\n\n![\"<\/div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9d14648fb900a7a600582fdf757b3339_l3.png\")
\n<\/div>\n!["exercice]("http:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/cropped-polynomials-p-icon.png.png"){kind=icon}
<\/figure>\n<\/div>\n Exercice 5<\/h3>\n
\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-70b63640315186b753ec3e9139853860_l3.png\")
\n\n![\"<\/div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4181c2e548adcb9703c6bf428b0c72d0_l3.png\")
\n<\/div>\n!["exemples]("http:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemples-de-fonctions-logarithmiques-ou-avec-logarithmes.webp")
<\/figure>\n<\/div>\n Exercice 6<\/h3>\n
![\"\n\n<div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5aee69b17d43fd128e22f5f41260988f_l3.png\")
\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3b3b80efefee817b86a28526d78960ff_l3.png\" "\\"Rendered")
<\/p>\n![\"](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9b326f6c32bcb908d0eab60c1bcb0174_l3.png\")
x<\/em> dans l’intervalle de domaine : <\/p>\n\n![\"<\/div](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-826141d2d52e99c3486b8b379b2b2d46_l3.png\")
\n<\/div>\n!["fonction]("http:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/domaine-de-fonction-logarithmique.webp")
<\/figure>\n<\/div>\n<\/span>Propri\u00e9t\u00e9s des logarithmes<\/span><\/h2>\n
\n
![\"\n\n<ul](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1a8646e21ba12be6d9fcc2c81dd7f3fc_l3.png\")
\n![\"\n\n<ul](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-12bbcd746fa479d5120d967e3e46b3ce_l3.png\")
\n![\"\n\n<ul](\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fde29a5776772e1536da48d1df3fc01a_l3.png\")
\n