设[img=13x19]1803856e2644d14.png[/img]:[img=134x26]1803856e2ee16dd.png[/img](内侧),则曲面积分[img=228x48]1803856e3950e35.png[/img]的值等于
A: [img=63x43]1803856e415b734.png[/img]
B: [img=63x43]1803856e4a14325.png[/img]
C: [img=63x43]1803856e52bc122.png[/img]
D: [img=36x22]1803856e5b9ed6f.png[/img]
E: [img=63x43]1803856e63f0aed.png[/img]
F: [img=63x43]1803856e6cc6d7d.png[/img]
G: [img=63x43]1803856e75410d5.png[/img]
H: [img=38x43]1803856e7d6ecf6.png[/img]
I: [img=50x24]1803856e86617fb.png[/img]
J: [img=54x43]1803856e900d4b1.png[/img]
K: [img=47x43]1803856e99755ed.png[/img]
A: [img=63x43]1803856e415b734.png[/img]
B: [img=63x43]1803856e4a14325.png[/img]
C: [img=63x43]1803856e52bc122.png[/img]
D: [img=36x22]1803856e5b9ed6f.png[/img]
E: [img=63x43]1803856e63f0aed.png[/img]
F: [img=63x43]1803856e6cc6d7d.png[/img]
G: [img=63x43]1803856e75410d5.png[/img]
H: [img=38x43]1803856e7d6ecf6.png[/img]
I: [img=50x24]1803856e86617fb.png[/img]
J: [img=54x43]1803856e900d4b1.png[/img]
K: [img=47x43]1803856e99755ed.png[/img]
举一反三
- 设[img=13x19]18030f91e9654e3.png[/img]:[img=134x26]18030f91f28f08f.png[/img](内侧),则曲面积分[img=228x48]18030f91fc3fd71.png[/img]的值等于 A: [img=63x43]18030f92048a719.png[/img] B: [img=63x43]18030f920c9d38d.png[/img] C: [img=63x43]18030f9214a20d3.png[/img] D: [img=36x22]18030f921d88182.png[/img] E: [img=63x43]18030f922539338.png[/img] F: [img=63x43]18030f922d55f48.png[/img] G: [img=63x43]18030f9236bb26f.png[/img] H: [img=38x43]18030f923f1f5f2.png[/img] I: [img=50x24]18030f9246cb3fe.png[/img] J: [img=54x43]18030f924f360fe.png[/img] K: [img=47x43]18030f925783baf.png[/img]
- 设[img=13x19]1803c1e6876b119.png[/img]:[img=134x26]1803c1e68e970f4.png[/img](内侧),则曲面积分[img=228x48]1803c1e69918307.png[/img]的值等于 A: [img=63x43]1803c1e6a19b026.png[/img] B: [img=63x43]1803c1e6a910cd9.png[/img] C: [img=63x43]1803c1e6b236ea2.png[/img] D: [img=36x22]1803c1e6ba87ae0.png[/img] E: [img=63x43]1803c1e6c7a6489.png[/img] F: [img=63x43]1803c1e6cfd3dff.png[/img] G: [img=63x43]1803c1e6d8580f3.png[/img] H: [img=38x43]1803c1e6e136a20.png[/img] I: [img=50x24]1803c1e6ea78fd4.png[/img] J: [img=54x43]1803c1e6f2e12ca.png[/img] K: [img=47x43]1803c1e6fadd0a7.png[/img]
- 设[img=13x19]180322a3d97815b.png[/img]:[img=134x26]180322a3e1bb15d.png[/img]内侧,则二重闭合曲线积分[img=262x48]180322a3ecc08a2.png[/img]的值 A: [img=63x43]180322a3f5f57cb.png[/img] B: [img=63x43]180322a3fe1162e.png[/img] C: [img=63x43]180322a4069358d.png[/img] D: [img=50x24]180322a40ed0cae.png[/img] E: [img=63x43]180322a4178f022.png[/img] F: [img=63x43]180322a41f82a6f.png[/img] G: [img=63x43]180322a428c4fce.png[/img] H: [img=63x43]180322a4314d77f.png[/img] I: [img=50x24]180322a43965f4f.png[/img] J: [img=63x43]180322a4420a206.png[/img]
- 已知随机变量X的分布函数为[img=136x49]1803b69024c8270.png[/img] ,则X的均值和方差分别为 A: E(X)=2, D(X)=4 B: E(X)=4, D(x)=2 C: [img=162x43]1803b6902cd8bfb.png[/img] D: [img=162x43]1803b69034d9ffd.png[/img]
- 设随机变量X服从均值为2的指数分布,X的分布函数为F(x),数学期望为E(X),方差为D(X),则以下结果正确的是 A: [img=128x28]1802d3b369ab5fe.png[/img] B: D(X)=4 C: P(X<2︱X>1)=F(1) D: P(X>2︱X>1)= F(1) E: [img=112x27]1802d3b372fb534.png[/img] F: D(X)=E(X) G: P(X≤2︱X>1)= F(2) H: [img=82x27]1802d3b37bbbf05.png[/img]