Question

Sendo f(x)=3x-2 e g(x)=2x+1, calcule:
a) fog
b) gof

Answer 1

f(x)=3x-2 e g(x)=2x+1

a) fog= f(g(x)) = 3(2x+1) - 2 ==> 6x + 3 - 2 ==> 6x + 1
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b) gof = g(f(x)) = 2(3x-2) + 1 ==> 6x - 4 + 1 ==> 6x - 3