设A=[img=69x75]17d61d6976ecaa6.png[/img] ,则代数余子式[img=22x25]17d61d697de5690.png[/img] = ( )
A: 5
B: -5
C: -10
D: 10
A: 5
B: -5
C: -10
D: 10
A
举一反三
- 设A= [img=67x77]17d61d6a952ce06.png[/img],则代数余子式[img=21x25]17d61d6a9d729ee.png[/img] = ( ) A: -5 B: -10 C: 5 D: 10
- 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]…
- 设D(X)=25,D(Y)=36,[img=58x17]17e0bcfc3a8fb71.jpg[/img],则D(X+Y)=( ) A: 61 B: 85 C: 37 D: 57
内容
- 0
在行列式[img=98x71]18035132287555b.png[/img]中,5的代数余子式是( )。 A: 5 B: -5 C: -6 D: 6
- 1
行列式[img=84x65]180393445abddfe.png[/img]的元素6的代数余子式等于【 】 A: 10 B: -10 C: 11 D: -11
- 2
设[img=51x25]17e0c56791e1fc5.png[/img]分别是行列式D中元素[img=20x25]17e0c5679f88ec7.png[/img]的余子式,代数余子式,则[img=149x25]17e0c567ac2c918.png[/img]
- 3
已知单线激光雷达数据点(ρ, θ)=(10,30°),计算x、y: A: [img=118x28]18036c00fcf56fb.png[/img] B: [img=118x28]18036c010630126.png[/img] C: x= 5, y=5 D: x=10, y=5
- 4
在行列式[img=72x75]17da5ad30351398.png[/img]中,元素[img=23x24]17da5ad318e4060.png[/img]的代数余子式[img=61x27]17da5ad331b8cc1.png[/img] A: 10 B: -10 C: 12 D: -12