Question

sejam as funçoes dadas por f(x)=2x-2 e g(x)=-x+3. Se b=g(a) entao quanto e f(b) ?

Answer 1

g(x)=-x+3
g(a)=-a+3=b

f(x)=2x-2
f(b)=2(b)-2
f(b)=2(-a+3)-2
f(b)=-2a+6-2
f(b)=-2a+4