Obtain derivatives of the following functions: (i) x sin x (ii) x^4 + cos x (iii) x/sin x

Obtain derivatives of the following functions: (i) x sin x (ii) x^4 + cos x (iii) x/sin x
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Obtain derivatives of the following functions: (i) x sin x (ii) x4 + cos x (iii) x/sin x
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