Question

Dadas as funções f(x)= 2x +1 , g(x)= 2x² - 3 e h(x)= x² + x - 5 determine as composições: a) (f o g)(x)=  

b) (f o h)(x)=

c) (h o f)(x)=

Answer 1

A) (fog) (x) = 2x+1
2(2x^2-3)+1
4x^2-5
B) (foh) (x) = 2(x^2+x-5)+1
2x^2+2x-9
C) (hof) (x) =x^2+x-5
(2x+1)^2 + (2x+1)-5
4x^2 +4x+1+2x+1-5
4x^2+6x-3