Question

Найдите производную функции

Answer 1

$y'(x)=frac{2x( x^{2} -1)- x^{2} 2x}{( x^{2} -1) ^{2} } = frac{2 x^{3}-2x-2 x^{3} }{( x^{2} -1) ^{2} } =- frac{2x}{(x^2-1)^2}$