jika f(x) =5-3x-x² dan g(x) =2x+1 maka nilai (fog) (½)
Matematika
ahelmi429
Pertanyaan
jika f(x) =5-3x-x² dan g(x) =2x+1 maka nilai (fog) (½)
2 Jawaban
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1. Jawaban khominghoo
(fog)(x) = 5-3(2x+1)-(2x+1)² = 5 -6x-4x-3-1-x²
= 1-10x-x²
(fog)(½) = 1 - 10/2 + ¼ = (4-20+1)/4 = -15/4 = -3¾ -
2. Jawaban meli242
jawabannya begini f(g(½))=f(2) = -5