Multivariable Calculus章节测试课后答案2024春

第三章测试

1.Consider the region in the -plane. Compare the magnitudes of and . Then which one of the following is right? （ ）.
A: B: C:
答案:B
2.Let , find （ ）.
A: B: C:
答案:C
3.Let be a curve on the plane, the expression represents for a line integral of first type. （ ）
A:对 B:错
答案:B
4.Let be the region enclosed by and , then . （ ）
A:对 B:错
答案:B
5.Let be the solid enclosed by and , then . （ ）
A:错 B:对
答案:A