Question

Производные
y=x^3+x^2-x-1
y=(x-3)/(x+1) дробь

Answer 1

1. y'=3х²+2х-1
2. y'=[(x-3)'·(x+1)-(x-3)·(x+1)']/(x+1)²=
=[(x+1)-(x-3)]/(x+1)²=4/(x+1)²