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Makaros

Guest

HELP Finding Derivative of Inverse

Hi I need help fiding derivative of inverse  using this rule : f-¹ = 1/ f'[f^-1(x)]

1. f(x) = √2x, x ≥ 0
Find derivative of inverse using f-¹ = 1/ f'[f^-1(x)]

2. f(x) 2x²-2, x ≥ 0

Find d/dx f^-1 (0) [Note that f(1)=0

Please help me solve BOTH problems using   THIS RULE =====>  f-¹ = 1/ f'[f^-1(x)]

Also, Please explain how you did it.. Thnaks

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: HELP Finding Derivative of Inverse

Hi makaros;

For 1)

If you meant f(x)=√ (2x) then this is how I do it.

Last edited by bobbym (2009-07-19 13:09:27)

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