Question

find ^-1 and then verify that (fof^-1)(x)=(f^-1of)(x)=x
f(x)=x+3/x-2

Answer 1

hope this helps https://www.mathsisfun.com/sets/function-inverse.html

Answer 2

:)

Answer 3

thanks @i_suck_at_school

Answer 4

welcom