Nilai g(-2), fungsi komposisi

Putri Princezna
Diketahui fungsi f(x) = 2x + 1 dan
(f o g)(x + 1) = –2x^2 – 4x – 1. Nilai g(–2) =

Insan Budiman Mahdar
‎2(g(x+1))+1=-2x^2-4x-1
g(x+1)=-x^2-2x-1
untuk x=-3 didapat
g(-2)=-(-3)^2-2(-3)-1=-4

 

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Just a crazy people
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