Derivative of $$$\sqrt{x} - 1$$$
The calculator will find the derivative of $$$\sqrt{x} - 1$$$, with steps shown.
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Your Input
Find $$$\frac{d}{dx} \left(\sqrt{x} - 1\right)$$$.
Solution
The derivative of a sum/difference is the sum/difference of derivatives:
$${\color{red}\left(\frac{d}{dx} \left(\sqrt{x} - 1\right)\right)} = {\color{red}\left(\frac{d}{dx} \left(\sqrt{x}\right) - \frac{d}{dx} \left(1\right)\right)}$$The derivative of a constant is $$$0$$$:
$$- {\color{red}\left(\frac{d}{dx} \left(1\right)\right)} + \frac{d}{dx} \left(\sqrt{x}\right) = - {\color{red}\left(0\right)} + \frac{d}{dx} \left(\sqrt{x}\right)$$Apply the power rule $$$\frac{d}{dx} \left(x^{n}\right) = n x^{n - 1}$$$ with $$$n = \frac{1}{2}$$$:
$${\color{red}\left(\frac{d}{dx} \left(\sqrt{x}\right)\right)} = {\color{red}\left(\frac{1}{2 \sqrt{x}}\right)}$$Thus, $$$\frac{d}{dx} \left(\sqrt{x} - 1\right) = \frac{1}{2 \sqrt{x}}$$$.
Answer
$$$\frac{d}{dx} \left(\sqrt{x} - 1\right) = \frac{1}{2 \sqrt{x}}$$$A