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Coolmath Algebra
Inverse Functions Lesson 1 - What Are They and What Do They Do? (page 1 of 3)
---- This algebra lesson explains the concept of inverse functions

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Inverse functions undo each other!

That's it.  Go home.

OK.  I'll elaborate.

Think of a number...  I'll wait.

OK, now add 3 to it...  Now, subtract 3 from that.  What do you get?

The number you started with!

Check it out:

5 -> + 3 -> 8 -> - 3 -> 5
 

So, these guys are inverse functions:

f( x ) = x + 3

add the 3 on...

g( x ) = x - 3

takes the 3 off

Continued on the next page

 The printing and distribution and/or downloading of these lessons is strictly prohibited.
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