x³+y³-3axy=0 这个怎么求导 对y求导
如题所述
第1个回答 2014-10-13
把x当成常数
追答
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d439b6003af33a87dbe91d62c55c10385243b5c5?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追问少个3吧
/3y²
追答嗯嗯
约分
不好意思哈
追问没事。。我以为我算错了
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/42a98226cffc1e175bf294494990f603738de97d?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
别人说答案是这个。,不知道哪个错
追答这怎么来的
不对
追问说 把y看成复合函数就行了。。我是醉了
追答对啊
还有下半句
把x当成常数
他咋不告诉你
他咋不告诉你
追问说书上的答案。。我没那书
算不出来问我的。。我也算不出来。。
追答
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/cb8065380cd79123af848e0cae345982b2b78065?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
看看例题
我感觉没错啊
追问
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/1c950a7b02087bf4e55b5391f1d3572c11dfcf17?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
是不是隐函数??
追答是啊
追问隐函数求y导。。一般x怎么做变量?
追答对y求偏单x是常数
追问
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/908fa0ec08fa513ddf636ca63e6d55fbb3fbd9f9?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
是不是这样。。
追答我觉得不对
追问
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/21a4462309f790529b4f45460ff3d7ca7bcbd571?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
有点像耶。。😁
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