Question

найти производную у = (2 х+1)(х²+3 х-1)

Answer 1

y'=(2x+1)'(x²+3x-1)+(2x+1)(x²+3x-1)'=2(х²+3х-1)+(2х+1)(2х+3)=2х²+6х-2+4х²+6х+2х+3=6х²+14х+1