Derivative of $\mathrm{e}^x$ w.r.t. $\sqrt{x}$ is

Derivative of $\mathrm{e}^x$ w.r.t. $\sqrt{x}$ is
  1. $\sqrt{x} e^x$
  2. $-2 \sqrt{x}$
  3. $2 \sqrt{x} \mathrm{e}^x$
  4. $\frac{1}{2} \sqrt{x} \mathrm{e}^x$

Solution

Let $\mathrm{u}=\mathrm{e}^x$ and $\mathrm{v}=\sqrt{x}$ Differentiating u and v w.r.t. $x$, we get $\begin{aligned} & \frac{\mathrm{du}}{\mathrm{dx}}=\mathrm{e}^x, \frac{\mathrm{dv}}{\mathrm{~d} x}=\frac{1}{2 \sqrt{x}} \\ \therefore \quad & \frac{\mathrm{du}}{\mathrm{dv}}=\frac{\frac{\mathrm{du}}{\mathrm{dx}}}{\frac{\mathrm{dv}}{\mathrm{dx}}}=\frac{\mathrm{e}^x}{\frac{1}{2 \sqrt{x}}}=2 \mathrm{e}^x \sqrt{x} \end{aligned}$

Asked in: MHT CET 2024 (09 May Shift 1)

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