Question

Много баллов.
Найдите производную
$4x^{2} - frac{7}{ x^{2} }$

Answer 1

(4x²)'=8x
(7/x²)'=7*(x^-2)'=-14x^-3

(u-v)'=u'-v'

$(4 {x}^{2} - frac{7}{ {x}^{2} } )'=$
$= 4 {x}^{2} - 7 {x}^{ - 2} =$
$= 8x + 14 {x}^{ - 3}$