- 1
-
设区域
,计算
- 2
-
求函数
的极值。
- 10
-
________.
- 11
-
________.
- 12
-
________。
- 13
-
________.
- 15
-
________.
- 17
-
________.
- A.0
- B.1
- C.2
- D.4
- A.<img src="//img1.yqda.net/question-name/7e/861a624572318ea7afa4300b814813.png" width="79" height="19"/>
- B.<img src="//img1.yqda.net/question-name/8f/5051063529517e774a6592cb8b3d3e.png" width="95" height="32"/>
- C.<img src="//img1.yqda.net/question-name/a8/964da3b88fcc01dbefd08d82a65f36.png" width="64" height="22"/>
- D.<img src="//img1.yqda.net/question-name/9e/af33f2361f9a05160fa6fefd85ad2a.png" width="86" height="22"/>
- 21
-
若二元函数
,则
- A.2xy+3+2y
- B.xy+3+2y
- C.2xy+3
- D.xy+3
- 22
-
方程
表示的二次曲面是
- A.柱面
- B.球面
- C.施转抛物面
- D.椭球面
- A.<img src="//img1.yqda.net/question-name/bc/7cee29f83c8f8504776acb4f714cc9.png" width="100" height="36"/>
- B.f(2x)+C
- C.2f(2x)+C
- D.<img src="//img1.yqda.net/question-name/72/5e0c867099d06c08519c361e104812.png" width="90" height="33"/>
- A.In |2-x|+C
- B.-|In 2-x|+C
- C.<img src="//img1.yqda.net/question-name/60/4eccabc120339c0f2cc02c66444f00.png" width="112" height="37"/>
- D.<img src="//img1.yqda.net/question-name/54/ba5732d3c466b110d06f9306237822.png" width="95" height="35"/>
- A.0
- B.2
- C.2f(-1)
- D.2f(1)
- A.(1+sinx)dx
- B.(1-sinx)dx
- C.sinxdx
- D.-sinxdx
- 27
-
若函数
,则f’(x)=
- A.<img src="//img1.yqda.net/question-name/b3/094be7bfa32e2f36f968a932275c11.png" width="37" height="18"/>
- B.<img src="//img1.yqda.net/question-name/37/6cc903b55f985122898229cc807d23.png" width="45" height="21"/>
- C.<img src="//img1.yqda.net/question-name/fd/c65ba77ebd57c238a96cc3e13f1e6e.png" width="46" height="20"/>
- D.<img src="//img1.yqda.net/question-name/2f/d2732248c75da661285bdf568ab780.png" width="23" height="18"/>