Question

найдите 0.5y(x)-2y(1/x),y(x)=x^2

Answer 1

$0.5 {x}^{2} -2( { \frac{1}{x}) }^{2} = \\ = 0. 5{x}^{2} - 2 \frac{1}{ {x}^{2} } = 0.5 {x}^{2} - \frac{2}{ {x}^{2} } = \\ = \frac{0.5 {x}^{4} - 2 }{ {x}^{2} }$