Question

Which is the inverse fuction of f(x)=4x

Answer 1

f(x)=4x

To find the inverse, first change f(x) to y:

y = 4x

Now switch the variables:

x = 4y

Solve for Y:

Divide both sides by 4:

y = x/4

Now replace y with the inverse function f^-1(x):

f^-1(x) = x/4