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15 June, 07:21

How do I differentiate f (x) = xcosx+2tanx

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  1. 15 June, 07:22
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    D/dx (xcosx) + d/dx (2tanx)

    = (1*cosx + x * (-sinx) + 2sec^2 (x)

    = cosx - xsinx + 2sec^2 (x)
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