We are given that:

Show that:

I've tried to figure this out and it just won't work!

Can anybody help please?

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- Dec 3rd 2006, 02:13 AManthmooStrange derivative question
We are given that:

Show that:

I've tried to figure this out and it just won't work!

Can anybody help please? - Dec 3rd 2006, 03:58 AMSoroban
Hello, anthmoo!

It's not "strange" . . . You're making an error or two.

Quote:

Given: .

Show that: .

Quotient Rule: .

Multiply top and bottom by

. .

Therefore: .

- Dec 3rd 2006, 04:14 AMearboth
- Dec 3rd 2006, 04:43 AManthmoo
Thanks again guys!

Looking at yours I realised I did make a stupid error of originally not expanding correctly.

In an earlier part of the question, you were to expand without the denominator - there, 2x in the denominator instead of 4x!

Thanks!