Which function is the inverse of f(x) = –5x – 4?

f^(-1)(x) = \frac{-1}{5} (x+4)

Step-by-step explanation:

Given is a function

To find its inverse.

We must check whether f is one to one or onto first

If -5x1-4 = -5x2-4 we get x1=x2

Hence f is one to one

Also for every f(x) we can find a x so f is onto.

So inverse exists

Let

Replace x by f inverse and y by x

1; 35 is the ratio

step-by-step explanation:

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation: