Question

x^4-x^2/x-1 найдите производную функции 

Answer 1

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