SOLUTION: For which pairs of functions is (f o g)(x) =x f(x)=x^2 and g(x) = 1/x f(x) = 2/x and g(x) = 2/x f(x) = x-2/3 and g(x) = 2-3x f(x) = 1/2 x-2 and g(x) = 1/2 x+2

Algebra ->  Functions -> SOLUTION: For which pairs of functions is (f o g)(x) =x f(x)=x^2 and g(x) = 1/x f(x) = 2/x and g(x) = 2/x f(x) = x-2/3 and g(x) = 2-3x f(x) = 1/2 x-2 and g(x) = 1/2 x+2      Log On


   

Question 1038995: For which pairs of functions is (f o g)(x) =x
f(x)=x^2 and g(x) = 1/x
f(x) = 2/x and g(x) = 2/x
f(x) = x-2/3 and g(x) = 2-3x
f(x) = 1/2 x-2 and g(x) = 1/2 x+2
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


For each of the given answers, replace x in f(x) with the definition of g(x). Simplify. If you get anything but x, exclude that answer.

John

My calculator said it, I believe it, that settles it