g(x)=5x - 2 dan (gof)(x)=10x²+15x + 3 tentukan rumus fungsi f(x)
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Pertanyaan
g(x)=5x - 2 dan (gof)(x)=10x²+15x + 3 tentukan rumus fungsi f(x)
1 Jawaban
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1. Jawaban ANIsaRafa
(gof)(x) = 10x² + 15x + 3
g(x) = 5x - 2
(gof)(x) = 10x² + 15x + 3
g(f(x)) = 10x² + 15x + 3
5(f(x)) - 2 = 10x² + 15x + 3
5f(x) = 10x² + 15x + 3 + 2
5f(x) = 10x² + 15x + 5
f(x) = 10x² + 15x + 5/5
f(x) = 2x² + 3x + 1