计算下列面积的曲面积分，[img=105x32]1803dc61ccd44df.jpg[/img] ，其中为球面上[img=134x25]1803dc61d5bdcf6.png[/img]的部分
A: [img=85x27]1803dc61de71919.png[/img]
B: [img=75x27]1803dc61e6e6854.png[/img]
C: [img=30x22]1803dc61eecc8c0.png[/img]
D: [img=48x24]1803dc61f7f28f1.png[/img]
A: [img=85x27]1803dc61de71919.png[/img]
B: [img=75x27]1803dc61e6e6854.png[/img]
C: [img=30x22]1803dc61eecc8c0.png[/img]
D: [img=48x24]1803dc61f7f28f1.png[/img]
举一反三
- 独立重复地投掷一颗均匀的骰子，直到出现6点就停止投掷，设X表示投掷骰子的次数，则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803da13460ecf5.png[/img][img=36x43]1803da134eadb99.png[/img][img=57x43]1803da135709664.png[/img]…[img=58x43]1803da135e5a076.png[/img]… D: X123…k…P[img=9x43]1803da13671cd55.png[/img][img=36x43]1803da13703c21c.png[/img][img=57x43]1803da1378489ec.png[/img]…[img=58x43]1803da13822269c.png[/img]…
- 独立重复地投掷一颗均匀的骰子，直到出现6点就停止投掷，设X表示投掷骰子的次数，则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803573572a7b80.png[/img][img=36x43]180357357af3976.png[/img][img=57x43]180357358399321.png[/img]…[img=58x43]180357358bf0f84.png[/img]… D: X123…k…P[img=9x43]180357359488348.png[/img][img=36x43]180357359c7d68a.png[/img][img=57x43]18035735a57969a.png[/img]…[img=58x43]18035735ae0e3f4.png[/img]…
- 独立重复地投掷一颗均匀的骰子，直到出现6点就停止投掷，设X表示投掷骰子的次数，则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803da175d21bb3.png[/img][img=36x43]1803da176510759.png[/img][img=57x43]1803da176e34ee6.png[/img]…[img=58x43]1803da177747ce7.png[/img]… D: X123…k…P[img=9x43]1803da177fbaa74.png[/img][img=36x43]1803da17890c39f.png[/img][img=57x43]1803da1792a9c56.png[/img]…[img=58x43]1803da179bd7a28.png[/img]…
- 计算下列面积的曲面积分，[img=105x32]1803b535d8f1a83.jpg[/img] ，其中为球面上[img=134x25]1803b535e2ca6aa.png[/img]的部分 A: [img=85x27]1803b535eb03abc.png[/img] B: [img=75x27]1803b535f4dcc85.png[/img] C: [img=30x22]1803b535fc780d8.png[/img] D: [img=48x24]1803b536043d73c.png[/img]
- 设D(X)=25,D(Y)=36,[img=58x17]17e0bcfc3a8fb71.jpg[/img],则D(X+Y)=( ) A: 61 B: 85 C: 37 D: 57