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Closed Calculus

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Ferocity

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Pa help dito mga sir, iproprove daw using rational functions of sinx and cosx, or weierstrass.
 

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Eto rin

integral.gif cot udu=integral.gif (cos u / sin u ) du

Let u=sin u
So du= cos u du
Sub mo na lang yung du=cos u, tapos u =sin u

integral.gif (cos u / sin u) du=integral.gif u / du

Integral nito
=ln |u| + C

Balik mo lang
integral.gif cot udu= ln |sin u| + C
 

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