please try to do these questions.

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- November 4th 2006, 01:30 AMm777derivate
please try to do these questions.

- November 4th 2006, 04:07 AMtopsquark
- November 4th 2006, 06:35 AMearbothnr. 3 only
- November 4th 2006, 09:08 AMSoroban
Hello, m777!

Quote:

1) Prove that the derivative of . .is: .

Multiply first: .

And we have: .

Then: .

Multiply "top and bottom" by

Therefore: .

Quote:

3) Differentiate: .

Square first: .

So we have: .

Then: .

Therefore: .

Quote:

2) Differentiate: .

I'm still working on this one, but I would "rationalize" first.

Multiply top and bottom by

. .

. .

. . . . .*then*differentiate.

. . . . . ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

I don't agree with the given answer.

. . (Why aren't the 2's cancelled out?)

Could it be: . ?

- November 5th 2006, 03:38 AMm777answer
hello,

soroban

In my book answer is same as i mention in question.any how i will concern with my teacher but i agree with your answer.

many best wishes for you

from

m777.