Find differentiation of y w.r.t x. (i) `y=(sin x)/x` , (ii) `y=(4x^(3))/e^(x)`

Explanation

To find the differentiation of \( y \) with respect to \( x \) for the given functions, we will use the quotient rule. The quotient rule states that if \( y = \frac{u}{v} \), then the derivative \( \frac{dy}{dx} \) is given by:

\[ \frac{dy}{dx} = \frac{v \frac{du}{dx} - u \frac{dv}{dx}}{v^2} \]

### Part (i): \( y = \frac{\sin x}{x} \)

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