Derivative, Find the derivative of cos x / x usinf first principle ?

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Title: Derivative

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Posted On: Feb 09, 2012 07:11 AM

Find the derivative of cos x / x usinf first principle ?

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Ishan Iqbal
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Answer Details:

Feb 09, 2012 07:23 AM

cosx/x

no using the u/v rule,

we get (vdu-udv)/v²

similarly here,

(x(-sinx)-cosx(1))/x²

=-(cosx+xsinx)/x²

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