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26-05-2017
Mathematics

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Find derivative of 2cosx+2cos2x

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apologiabiology apologiabiology

26-05-2017

derivitive of cosx=-sinx
dy/dx sinx=cosx
and use chain rue

2cosx=-2sinx
2cos2x=-4sin2x
so
-2sinx-4sin2x id the deritivitve

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