【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/EC7EAEAFBB23C31B8FBE3DF6373D4568.png title=12.png alt=12.png/>
①
正确
②
错误
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/191157384C9878B0EA0A6D44E43D4584.png title=12.png alt=12.png/>
①
正确
②
错误
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/D30AA2C444BA91F2AC9CB2195E205365.png title=12.png alt=12.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/71D0CDB2F8C0E3F17BE27499A8236A3F.png title=12-1.png alt=12-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/8ADCB22CC1BCD18DBE40B8B427299858.png title=12-2.png alt=12-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/55A7E61DFD123A3E843321C7DE0108A0.png title=12-3.png alt=12-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/6CCB4B52AD7F0964E0A0894877B0E6AC.png title=12-4.png alt=12-4.png/>
【单选题】
设<img src=https://huaweicloudobs.ahjxjy.cn/EA6FB79FF8DF7A9F3A2D0CEB093C717F.png title=QQ图片20160224214006.png alt=QQ图片20160224214006.png/>在<img src=https://huaweicloudobs.ahjxjy.cn/DF3DA077C2189146990B3800DA1E18ED.png title=QQ图片20160224214023.png alt=QQ图片20160224214023.png/>的偏导数存在，则<img src=https://huaweicloudobs.ahjxjy.cn/61AF63E59A60D6B49960C25A0B85414F.png title=QQ图片20160224214038.png alt=QQ图片20160224214038.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/588DCE737E539AFE5318232DBC0C8858.png title=QQ图片20160224214107.png alt=QQ图片20160224214107.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/1898B210FBB62DA4DA7997BB95A4D586.png title=QQ图片20160224214125.png alt=QQ图片20160224214125.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/C9D08ECB097A69F4F22594D120D687E7.png title=QQ图片20160224214140.png alt=QQ图片20160224214140.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/6101D759594C1C2892D8E9F8195520C5.png title=QQ图片20160224215328.png alt=QQ图片20160224215328.png/>
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/3AB93BC127D9C7E41681D2896634C645.png title=12.png alt=12.png/>
①
正确
②
错误
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/77DEB5CF17B6B2AFC3DD34F0ADF84C2F.png title=12.png alt=12.png/>
①
正确
②
错误
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/B44FE4C663F840BE5903D2028D22D935.png title=12.png alt=12.png/>
①
正确
②
错误
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/1A8358DFDFF2D330790C507EEE1C0152.png title=12.png alt=12.png/>
①
正确
②
错误
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/D3C9DF8295BB395857FF6148A2FD8B1F.png title=12.png alt=12.png/>
①
正确
②
错误
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/819172A090D926AF927FAFB724387F88.png title=12.png alt=12.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/D801891324866BC2864186D9F2919692.png title=12-1.png alt=12-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/0075307DE09A54524E87CC1DA8C0342C.png title=12-2.png alt=12-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/6F04D6EE8E3988D53917829A64A8EC90.png title=12-3.png alt=12-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/A9E6D5AAFE79AF213CC5E3064F0EBE46.png title=12-4.png alt=12-4.png/>
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