Question

Can someone solve and explain this to me please? "If f(x) = 2x + 1 and g(x) = (x – 1)/2 , then f(g(x)) =??" thanks

Answer 1

it means: that whatever you see an "x" in the f(x) equation; replace it with all of g(x)

Answer 2

If f(x) = 2x + 1 and g(x) = (x – 1)/2 , then:

f(g(x)) = 2[(x-1)/2] +1 ; and simplify

Answer 3

ok thank you, but why do you have to replace the x in fx with all of gx?...

Answer 4

its just becasue thats the way the notation reads; why do it? sometimes theres a practical reason; but for now its just to get you to understand the process

Answer 5

ahh alright thank you for your help! :)