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Tugas kalkulus

Tolong kak
Tugas kalkulus

$(fog)(x) = f(g(x)) \ 8x + 11 = f(4x + 7)$

misal

$4x + 7 = a \ 4x = a - 7 \ x = frac{a - 7}{4}$

maka

$f(a) = 8( frac{a - 7}{4} ) + 11 \ f(a) =2(a - 7) + 11 \ f(a) =2a - 14 + 11 \ f(a) =2a - 3 \ f(x) = 2x - 3$