Tentukan f(x) jika: 1. (Fog) (x) =4x+7 g(x) =2x 2.(fog) (x) =x^2+3x-6 g(x) =x+1

fog(x) = 4x + 7
g(x) = 2x

fog(x) = 4x + 7
f(2x) = 4x + 7
f(x) = 4(x/2) + 7
f(x) = 2x + 7
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fog(x) = x² + 3x - 6
g(x) = x + 1

fog(x) = x² + 3x - 6
f(x + 1) = x² + 3x - 6
f(x) = (x - 1)² + 3(x - 1) - 6
f(x) = x² - 2x + 1 + 3x - 3 - 6
f(x) = x² + x - 8