Math Is Fun Forum

Fruityloop

Member

Registered: 2009-05-18

Posts: 143

Answer different from book

Hi all,
     I've been working out of a calculus book doing implicit differentiation.
Find

by implicit differentiation.
The equation is

The book gives

But I get

I have no idea how the answer in the book was arrived at.
Anybody care to try it?

Last edited by Fruityloop (2009-09-26 17:08:17)

Avon

Member

Registered: 2007-06-28

Posts: 80

Re: Answer different from book

The two answers are equivalent.

At any point on the curve defined by

we have

Last edited by Avon (2009-09-26 17:41:44)

Fruityloop

Member

Registered: 2009-05-18

Posts: 143

Re: Answer different from book

Very good! Thank you.  I missed that.