Question
Differentiate the $\frac{{{e^x}}}{{\sin x}}$ w.r.t x.

Answer

Let $y = \frac{{{e^x}}}{{\sin x}}$ 

$\therefore \frac{{dy}}{{dx}} = \frac{{\sin x\frac{d}{{dx}}{e^x} - {e^x}\frac{d}{{dx}}\sin x}}{{{{\sin }^2}x}}$ [By quotient rule]

$= \frac{{\sin x.{e^x} - {e^x}\cos x}}{{{{\sin }^2}x}}$

$= {e^x}\frac{{\left( {\sin x - \cos x} \right)}}{{{{\sin }^2}x}}$

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