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z=f(x,y)在P0(x0,y0)一阶偏导数存在是该函数在此点可微的什么条件()?

  • A、必要条件
  • B、充分条件
  • C、充要条件
  • D、无关条件

参考答案

更多 “ z=f(x,y)在P0(x0,y0)一阶偏导数存在是该函数在此点可微的什么条件()?A、必要条件B、充分条件C、充要条件D、无关条件” 相关考题
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