Diket g(x) = 2x + 3 (gof)(x) = 2x2 + 4x + 5 . tentukan f(x) ?
Matematika
poetree99
Pertanyaan
Diket g(x) = 2x + 3
(gof)(x) = 2x2 + 4x + 5 . tentukan f(x) ?
(gof)(x) = 2x2 + 4x + 5 . tentukan f(x) ?
2 Jawaban
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1. Jawaban ekamiaww
g(x) = 2x + 3
(gof)(x) = 2x² + 4x + 5
g(f(x)) = 2x² + 4x + 5
2.f(x) + 3 = 2x² + 4x + 5
2.f(x) = 2x² + 4x + 5 - 3
2.f(x) = 2x² + 4x + 2
f(x) = x² + 2x + 1 -
2. Jawaban yuliawanti
(gof) (x) = 2x² + 4x +5
g{f(x)} = 2x² + 4x +5
2{f(x)} + 3 = 2x² + 4x +5
f(x) =( 2x² + 4x +5 -3) / 2
f(x) =( 2x² + 4x +2) / 2
f(x) = x² + 2x + 1