求y=2xsin(2x+5)的导
问题描述:
求y=2xsin(2x+5)的导
答
2sin(2x+5)+4xcos(2x+5)
答
y'=(2x)'sin(2x+5)+(2x)[sin(2x+5)]'
=2sin(2x+5)+4xcos(2x+5)