Question

Use the 4 step method to find the inverse of f-1(x) ----f(x)= 2x-1. Please show work

Answer 1

f(x)= 2x-1
y = 2x-1
y+1=2x
x= (y+1)/2
f-1(x)=(x+1)/2 [x replaced by y]

Answer 2

yes but
we started with f-1 didn't we? So the answer we get shouldn't be f-1 right? should just be f(x)?

Answer 3

the given is f(x)=2x+1, the question is "find and simplfy" and the prompt is f-1(x) (hint:4-step method)

Answer 4

yes do that
f(x)= 2x-1
f(x)+1=2x
x= (f(x)+1)/2
f-1(x)=(x+1)/2