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Find first derivation of y w.r.t. x. (i)...

Find first derivation of y w.r.t. x. (i) `y=x^(2) sin x` , (ii) `y=4(e^(x))cos x`

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(i) `(dy)/(dx)=x^(2)(cos x)+(2x)(sin x)=x^(2) cos x+ 2xsin x`
(ii) `(dy)/(dx)=4[(e^(x))(cos x)+(e^(x))(-sin x)]=4e^(x)[cos x-sin x]`
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