Question

qual a derivada de f(x)= 2/x^2

Answer 1

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

A derivada é:

$2 \times ( - 2) {x}^{ - 2 - 1} = - 4 {x}^{ - 3} = \\ = - 4 \times \frac{1}{ {x}^{3} } = - \frac{4}{ {x}^{3} }$