Question

Сделайте, пожалуйста

Answer 1

1)
$f(-x)=(-x)^{5}=-x^{5}=-f(x)$
2)
$f( - x) = \frac{4}{ - x} = - \frac{4}{x} = - f( x)$
3)
$f( - x) = ( - x) + ( - x) ^{3} = \\ = - x - x ^{3} = - ( x + {x}^{3} ) = \\ = - f(x)$
4)
$f( - x) = - \frac{1}{ {( - x)}^{7} } = - \frac{1}{ - {x}^{7} } = \\ = \frac{1}{ {x}^{7} } = - f(x)$