z＝y/根号下x^2＋y^2的偏导数
1个回答
展开全部
Z(x,
y)
=
2x
sin2
y..............................(1)
?Z/?x
=
2sin2
y..................................(2)
?Z/?y
=
4xsinycosy
=
2x
sin(2y)........(3)
?2Z/?x2
=
0
.......................................(4)
?2Z/?y2
=
4x
cos(2y).........................(5)
?2Z/?x?y
=
4sinycosy
=
2sin(2y).......(6)
求偏导的基本方法是：对x求偏导时将y看成常数，对y求偏导时将x看作常数！
y)
=
2x
sin2
y..............................(1)
?Z/?x
=
2sin2
y..................................(2)
?Z/?y
=
4xsinycosy
=
2x
sin(2y)........(3)
?2Z/?x2
=
0
.......................................(4)
?2Z/?y2
=
4x
cos(2y).........................(5)
?2Z/?x?y
=
4sinycosy
=
2sin(2y).......(6)
求偏导的基本方法是：对x求偏导时将y看成常数，对y求偏导时将x看作常数！
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
