- 5
-
求函数
的极大值.
- 6
-
计算
- 9
-
计算
- 12
-
=________.
- A.(-1,2,-3);2
- B.(-1,2,-3);4
- C.(1,-2,3);2
- D.(1,-2,3);4
- 20
-
设二元函数
,则
- A.1
- B.2
- C.<img src="//img1.yqda.net/question-name/6f/dbf68f1ebeb580f538e4befe56f620.png" width="50" height="24"/>
- D.<img src="//img1.yqda.net/question-name/8b/bf48cf72176dc7e5ad5c04f3e4cea1.png" width="54" height="44"/>
- A.-e
- B.<img src="//img1.yqda.net/question-name/67/fb952143c203c7e5e4acc0e8c6f570.png" width="34" height="22"/>
- C.<img src="//img1.yqda.net/question-name/3b/215e43b4342f5840b933d047f166e1.png" width="22" height="22"/>
- D.e
- 22
-
设二元函数
,则
- A.2xy+siny
- B.<img src="//img1.yqda.net/question-name/ff/3a74a46c0cddc9cbaf1006aeccc9c5.png" width="78" height="24"/>
- C.2xy+xsiny
- D.<img src="//img1.yqda.net/question-name/ea/3a35531bb847fe7e26fe1b51f20999.png" width="74" height="24"/>
- A.<img src="//img1.yqda.net/question-name/46/820627731565960fadb0bdbf1f3986.png" width="75" height="42"/>
- B.<img src="//img1.yqda.net/question-name/4a/88be67febd59891b08bb3b5df3adad.png" width="71" height="24"/>
- C.<img src="//img1.yqda.net/question-name/37/8550282bf1cc95007b486e3c18d89b.png" width="62" height="42"/>
- D.<img src="//img1.yqda.net/question-name/b8/710f7de323a6c6d77d3acb2d9c235c.png" width="56" height="24"/>
- A.不存在零点
- B.存在唯一零点
- C.存在极大值点
- D.存在极小值点
- 26
-
设
,则dy=
- A.<img src="//img1.yqda.net/question-name/3d/206c4cde70702aad8546484c2b9125.png" width="63" height="22"/>
- B.<img src="//img1.yqda.net/question-name/df/219bd01e9cee4b5be4e397e33a706a.png" width="56" height="22"/>
- C.<img src="//img1.yqda.net/question-name/35/2697c1a7ac4e3517e953cdc72d8c1b.png" width="44" height="22"/>
- D.<img src="//img1.yqda.net/question-name/0e/f22d2c522b3301516156255f810989.png" width="52" height="22"/>
- A.<img src="//img1.yqda.net/question-name/2f/b618ea95c57d3a1ae37803218ee035.png" width="16" height="42"/>
- B.1
- C.<img src="//img1.yqda.net/question-name/8b/6009d5837dfce935bcf2c9e50820d5.png" width="18" height="42"/>
- D.2π
- A.<img src="//img1.yqda.net/question-name/99/7b3f7de216332c775fc17fd5bdfc23.png" width="23" height="22"/>
- B.<img src="//img1.yqda.net/question-name/51/3a4a64bb7353eb250669d7f175bbdd.png" width="22" height="22"/>
- C.e
- D.<img src="//img1.yqda.net/question-name/09/58c806f16034ea8c0aa40c4a78fe68.png" width="18" height="22"/>