Question

if f(x)=2x-3 and g(x)=2x^2+1 find A.f(g(2)) B. g(f(x)) C. does f(x) have and inverse if so find the inverse of f(x)

Answer 1

a. g(2) = 2*4+1 = 9
f(g(2)) = 2*9 - 3 = 15

Answer 2

oh ok thank you

Answer 3

b. g(f(x)) = 2 (2x-3)^2 +1
= 2 (4x^2 -12x +9)+1
= 8x^2 - 24x +19

Answer 4

im a lil bit confused about a

Answer 5

why?

Answer 6

so when you found g(2) you pluugged it infor f(x)?

Answer 7

yes, because g(2) = x for f(x)

Answer 8

oh ok thanks