У=х²+1 / х²-1 решите производную
Y=(x²+1)/(x²-1) y'=(u/v)'=1/v²[u'v-v'u] u=x²+1 u'=2x v=x²-1 v'=2x y'=1/(x²-1)[2x*(x²-1)-2x*(x²+1)]=2x[x²-1-x²-1]/(x²-1)²=-4x/(x²-1)²