final test review: finding function inverse, evaluating fcns

[bandaidgirl]

Let f(x) = x^2 - 2x, g(x) = 3x + 1, and h(x) = (x - 2) / (x + 3)

Use these to find the following answers.

1) h^(-1) (x)

2) [f(x + h) - f(x)] / h

I am not sure how to do these two.

 

[stapel]

1) To learn how to find the inverse of a function, try the lessons available online:

. . . . .Google results for "find function inverse"

2) Are you saying that you're having trouble completing the simplification, or do you need to go back to the beginning and learn how to evaluate functions?

Please reply showing everything you have tried so far, so we can see where you are having trouble. Thank you.

Eliz.