Help with me this question please

Calculus
Tutor: None Selected Time limit: 1 Day

May 12th, 2015

Use Chain rule.  I start by letting u=sec theta+tantheta so du= sectheta tantheta+sec^2 theta

then have derivative of u^(-3)

which is -3u^(-4) du by power rule, plug in u and du and get

r'=-3(sec theta+tantheta)^(-4) *(sectheta tantheta+sec^2)

Hope this helps! Please best me if it does!

May 12th, 2015

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May 12th, 2015
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May 12th, 2015
Dec 8th, 2016
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