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chain rule

Asked by ashwinikumar59 8th May 2010, 4:17 PM
Answered by Expert
Answer:

Let y be a function of x.

Chain rule,

dy/dx = (dy/du)(du/dx)               .... multiply and divide by du

y = sinnx  = un  ........... where u = sin x

then dy/du = nun-1

du/dx = cos x

and

dy/dx = (dy/du)(du/dx) = nun-1cos x = nsinn-1x cos x 

Regards,

Team,

TopperLearning.

 

 

Answered by Expert 8th May 2010, 9:01 PM
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