Jika f(x) = 5x-6 g(x)= x²+3 dan (h•g•f) (x) = 25x²-60X +43, rumus fungsi h(x)=..
Matematika
Firashb
Pertanyaan
Jika f(x) = 5x-6 g(x)= x²+3 dan (h•g•f) (x) = 25x²-60X +43, rumus fungsi h(x)=..
1 Jawaban
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1. Jawaban dharmawan14
f (x) = 5x - 6 , g (x) = x^2 + 3
h o g o f (x) = 25x^2 -60x + 43
h o g { f(x) } = 25x^2 - 60x + 43
h o g(5x - 6) = 25x^2 - 60x + 43
h { g(5x -6) } = 25x^2 - 60x + 43
h (5x -6)^2 + 3 = 25x^2 - 60x + 43
h (25x^2 - 60x + 39) = 25^2 - 60x + 43
h (25x^3 - 60x + 39) = (25,^3 - 60x + 39) + 4
h (x) = x + 4