Z=3Y/X+Y,求зZ/зX,зZ/зY
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Z=3Y/X+Y,求зZ/зX,зZ/зY
Z=3Y/X+Y,求зZ/зX,зZ/зY
Z=3Y/X+Y,求зZ/зX,зZ/зY
对X求偏导时,把Y 看成常数就可以了.其实和求导没什么两样了.打那符号太麻烦了:)
Z=3Y/X+Y,求зZ/зX,зZ/зY
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