Question

Найти производную
Y=1-x^4/1+x^4

Answer 1

$y= \frac{1-x^4}{1+x^4}$
$y ' = (\frac{1-x^4}{1+x^4} ) ' = \frac{- 4x^3(1+x^4)-4x^3(1-x^4)}{(1+x^4)^2} = \frac{-8x^3}{(1+x^4)^2}$