Inverse Functions - Cool math Algebra Help Lessons - How to Find the Inverse of a Function

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Coolmath Algebra
Inverse Functions Lesson 5 - How to Find the Inverse of a Function (page 3 of 3)
---- This algebra lesson explains how to find the inverse of a function

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Here's another one:

Find the inverse of

STEP 1:

STEP 2:

STEP 3:

x = 2y - 1 ... add 1 to both sides ... x + 1 = 2y ... divide both sides by 2 ... ( 1 / 2 )x + ( 1 / 2 ) = y

STEP 4:

f^( -1 )( x ) = ( 1 / 2 )x + ( 1 / 2 )

Check it!

YOUR TURN:

Find the inverse of

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