Hello,

I need help , can someone show me how to find the derivative of the problem in the attached photo

Please

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- Jan 23rd 2010, 09:43 AMwolfhoundderivative.. problem
Hello,

I need help , can someone show me how to find the derivative of the problem in the attached photo

Please - Jan 23rd 2010, 09:54 AMdrumist
$\displaystyle f(t)=\left(t+\frac{1}{t}\right)^{-2}$

$\displaystyle f'(t) = -2 \left(t+\frac{1}{t}\right)^{-3} \cdot \left(t+\frac{1}{t}\right)'$

Can you finish from here? This is using the chain rule. - Jan 23rd 2010, 10:05 AMwolfhound
$\displaystyle \left(t+\frac{1}{t}\right)'$

Can you finish from here? This is using the chain rule.

,I'm not sure what the derivative is of this part is????

could you show me how to complete it please?

Can the quotient rule not be used.. - Jan 23rd 2010, 10:27 AMVonNemo19
- Jan 23rd 2010, 10:43 AMwolfhound
Thanks for the help!

But, is this the final answer? - Jan 23rd 2010, 10:46 AMVonNemo19
- Jan 23rd 2010, 10:52 AMwolfhound
- Jan 23rd 2010, 11:01 AMVonNemo19
- Jan 23rd 2010, 11:27 AMwolfhound
Oki doki man,

Thanks for your help