Section 1.8

Question 1

f and g are inverses under what parameters?

Answer 1

f(g(x)) = x and g(f(x)) =x

Question 2

What is the next step from here when calculating the inverse function of:

x-9=10/y

Answer 2

Multiply both sides by y which equals:

y(x-9)=10

Question 3

What is the next step in solving for y in:

y(x-9)=10

Answer 3

Divide both sides by (x-9) which equals:

y=10/x-9