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#1 2013-10-24 12:21:43

infinitebrain
Full Member

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Derivative of arcsec(1/t)

My textbook keeps saying it is


. Could someone work it step by step and show me how that answer is derived. I would appreciate it because I keep getting lost. Thanks![


The best thing about life is you don't know what to expect

#2 2013-10-24 15:31:10

bobbym
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Re: Derivative of arcsec(1/t)

Hi infinitebrain;

Your textbook is correct.

You can start with this page which shows how to get the derivative of arcsec

http://www.math.brown.edu/UTRA/trigderivs.html

Then you just use the chain rule.









From the above link:



The chain rule says:





Now just substitute u = 1 / t and clean up.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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