Y=cosX^2 求dy

分类: 作业答案 • 2022-05-23 22:06:59

问题描述：

Y=cosX^2 求dy

答

dy=dcos(x^2)
dy=2x[-sin(x^2)]dx
dy=-2xsin(x^2)dx

答

dy=dcos(x²)
=-sin(x²)dx²
=-sin(x²)*2xdx
=-2xsin(x²)dx