Question

Diketahui. f(x)=2x²+5
g(f)=x+1
Tentukan. a. (fog) (x)
b. (gof) (x)
c. (fog) (x)

Answer 1

A. (fog) (x) = 2×^2 + 5
= 2 (×+1)^2 + 5
= 2 (×^2 + 1) + 5
= 2×^2 + 1 + 5
= 2× + 6...
b. (gof) (x)= x + 1
= (2×^2 + 5) + 1
= 2×^2 + 6...
c. penyelesaian c sama dengan pertanyaan a...