Question

Помогите прошу решить задачи

Answer 1

13

$y '= ( \frac{1}{ {x}^{5} } ) '= ( {x}^{ - 5} )' = - 5 {x}^{ - 6} = - \frac{5}{ {x}^{6} }$

14

$y '= ( \frac{1}{ {x}^{ \cos( \frac{\pi}{3} ) } } )' = ( \frac{1}{ {x}^{ \frac{1}{2} } } )' = ( {x}^{ - \frac{1}{2} } ) '= \\ = - \frac{1}{2} {x}^{ - \frac{3}{2} } = - \frac{1}{2x \sqrt{x} }$

15

$y' = ( \sqrt[4]{x} )' = ( {x}^{ \frac{1}{4} } ) '= \frac{1}{4} {x}^{ - \frac{3}{4} } = \frac{1}{4 \sqrt[4]{ {x}^{3} } }$