Di bantu ya *please* (g°f)(x)= 4X2 + 6X -9 f(X)= 2X + 3 g(X)= ?.... Question from @redhaapriliya

September 2018 2 61 Report

Di bantu ya *please*

(g°f)(x)= 4X2 + 6X -9
f(X)= 2X + 3
g(X)= ?

safirahnadhila A=2x+3
x=a-3/2
g(x)= 4(a-3/2)^2+6(a-3/2)-9
=4(a^2-9/4) + 3a-9-9
=a^2-9+3a-9-9
g(x)=x^2 +3x-27

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ririnhaa Misal 2x + 3 = a ⇔ x = $\frac{a - 3}{2}$

(g°f) (x) = 4x² + 6x - 9
g (f(x)) =4x² + 6x - 9
g (2x + 3) = 4x² + 6x - 9
g (a) = 4([ $\frac{a - 3}{2}$ )² + 6 ( $\frac{a - 3}{2}$ ) - 9
g (a) = $4\frac{ a^{2} -6a + 9}{4}$ + $6( \frac{a - 3}{2} )$ - 9
g(a) = a² - 6a + 9 + 3a - 9 -9
g (a) = a² -3a -9
⇔ g(x) = x² - 3x - 9

comment jika ada jawabn yg keliruu !!
smogaa mmuaskaan

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Tentukan diferensial dengan fungsi f(x)= X^2-X

Pusat suatu lingkaran terletak pada garis 2x-y=5 dan x+3y=1. lingkaran tersebut melalui (5,3). tentukan persamaan lingkaran tersebut. di bantu yaa. please

Tolong di bantu ya (gugus fungsi) 1. (f°g)(x)= 2x2 +4x-9 f(x)=2x-1 dit: g(x) ? 2.f(x)=X2 s(x)=X+1 h(X)=/3 dit: a. (f°g°h)(x) b.(h°g°f)(x)

Tentukan persamaan garis melalui titik : 1). A(-3,4) dan bergradien -2 2). (-3,2) dan sejajar dengan garis 6x - y=2

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