i need the derivative of :

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- January 24th 2010, 03:07 AMgerinikican u fin the derivative of this function
i need the derivative of :

- January 24th 2010, 03:11 AMtonio
- January 24th 2010, 03:28 AMdrumist
The solution you provided doesn't match the problem.

Can I ask what solution you arrived at? - January 24th 2010, 03:30 AMgeriniki
this must be solution it's in the textbook :/

sorry i haven't written it correctly = x - 1/x isn't in the power - January 24th 2010, 03:34 AMdrumist
Is this the correct function?

- January 24th 2010, 03:39 AMgeriniki
yes

- January 24th 2010, 03:51 AMdrumist
You may use the product rule:

Can you find the derivatives of and ? - January 24th 2010, 03:59 AMgeriniki
yes thank you

- January 24th 2010, 06:15 AMHallsofIvy
Do you see

**why**Tonio was confused? (Because he**never**gives a wrong answer!)

What you gave in your initial post was not .