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

Explanation

To find the first derivative of the given functions with respect to \( x \), we will use the product rule of differentiation. The product rule states that if you have two functions \( u(x) \) and \( v(x) \), then the derivative of their product is given by:

\[ \frac{d}{dx}[u \cdot v] = u' \cdot v + u \cdot v' \]

### Part (i): \( y = x^2 \sin x \)

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