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!
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