SOLUTION: Let f(x)=7x an g(x)= 2x^2-9. find the following:
(fog)(x) (gof)(x) (fog)(2) and (gof)(-1)
not sure what i am doing,,,thanks for your help
Algebra ->
Rational-functions
-> SOLUTION: Let f(x)=7x an g(x)= 2x^2-9. find the following:
(fog)(x) (gof)(x) (fog)(2) and (gof)(-1)
not sure what i am doing,,,thanks for your help
Log On
Question 63216: Let f(x)=7x an g(x)= 2x^2-9. find the following:
(fog)(x) (gof)(x) (fog)(2) and (gof)(-1)
not sure what i am doing,,,thanks for your help Answer by jai_kos(139) (Show Source):
You can put this solution on YOUR website! Let f(x)=7x an g(x)= 2x^2-9. find the following:
(fog)(x) (gof)(x) (fog)(2) and (gof)(-1)
not sure what i am doing,,,thanks for your help
Solution:
Given fog(x) = f(g(x)) = f(2x^2 -9) = 7(2x^2 -9) = 14x^2 -56
g0f(x) = g(f(x) = g(7x) = 2(7x)^2 -9 = 2(49x^2) - 9 = 98x^2-9
(