2. Diketahui tiga buah Furyse F(X) = 3x +7. Fungsi g(x) = 2-2x dan Fungsi h(x) = 2x+1 tentukan nilai fungsi Komposisi (goFoh)(x)!
Jawaban:
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f(x) = x² + 3x – 1 h(x) = 1 – x (foh)(x) = (1 – x)² + 3(1 – x) – 1 = 1 – 2x + x² + 3 – 3x – 1 = x² – 5x + 3 g(x) = 2x + 5 (gofoh)(x) = g((foh)(x))