y=tan2xln(3x) 求dy

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/08/23 06:56:32

y=tan2xln(3x) 求dy

dy=ln(3x)dtan2x+tan2xdln(3x)
=ln(3x)*2sec²2xdx+tan2x*3/xdx
=[2ln(3x)sec²2x+3tan2x/x]dx

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