设函数f(x,y)具有二阶连续偏导数,函数z=f(x,xy ),求
如题所述
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望采纳,谢谢啦。
追问![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/cc11728b4710b9129582a2fbc9fdfc0392452277?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
你的那步 顺序是不是写反了?
追答因为题目说了,二阶连续。故跟求导顺序无关
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第1个回答 2017-05-28
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如上图所示。
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