Question

if f(x) = (3x + 2)/5 then f-1(x) =

Select one:
a. (5x - 2)/3
b. none of the options given
c. (3 - 5x)/2
d. (5x + 2)/3

Answer 1

Answer:

We have the equation

5f(x) = 3x+2

Putting f^-1(x) in place of x in this equation we get

5f(f^-1(x)) = 3*f^-1(x) + 2

5x = 3f^-1(x) + 2

or,

f^-1(x) = 1/3(5x-2)

hope this helps you !