Sunday, January 8, 2012

inverses

Notes
- to have an inverse, it must pass horizontal line test to be a function
- you switch x and y and solve for y

Lets do an example homie

Ex: Find the inverse of y=8x-4

This is a line which does pass the horiontal line test.
Be sure to check that before you waste uour time on a problem

x=8y-4

8y=4

y=1/2

To write something as an inverse, you use f^-1

This final answer would be f^-1= 1/2

There it go ya heard me. Rico Gathers all caught up on his blogs ya digg.

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