Question

Экстремум функции у= x^2-2\x

Answer 1

$y = {x}^{2} - \frac{2}{x} \\ y = {x}^{2} - \frac{2}{x} \: \: . \: \: \\ {x}^{2} - \frac{2}{x} = 0 \\ \frac{x {}^{3} - 2}{x} = 0 \\ {x}^{3} - 2 = 0 \\ x = {}^{3} \sqrt{2} \: \: . \: \:$