Question

Найти производную
(1/х^2-2/x^3)`

Answer 1

Ответ:

$( \frac{1}{ {x}^{2} } - \frac{2}{ {x}^{3} } ) '= ( {x}^{ - 2} - 2 {x}^{ - 3} ) '= \\ = - 2 {x}^{ - 2 - 1} - 2 \times ( - 3) {x}^{ - 3 - 1} = \\ = - 2 {x}^{ - 3} + 6 {x}^{ - 4} = - \frac{2}{ {x}^{3} } + \frac{6}{ {x}^{4} }$