Question

find the derivative​

Answer 1

Step-by-step explanation:

$x - \frac{1}{x} = 0$

$\frac{ {x}^{2} - 1 }{x} = 0$

Answer 2

Answer:

$= 1 + \frac{1}{ {x}^{2} }$

Step-by-step explanation:

$\frac{d}{dx} (x - \frac{1}{x} )$

$= \frac{d}{dx} (x) - \frac{d}{dx} ( \frac{1}{x} )$

$= 1 - ( \frac{ - 1}{ {x}^{2} } )$

$= 1 + \frac{1}{ {x}^{2} }$