设三维线性空间[img=11x19]180303606ac906b.png[/img]上的线性变换[img=15x19]1803036072fe5ff.png[/img]在基[img=57x23]180303607b6b013.png[/img]下的矩阵为[img=126x61]180303608659897.png[/img]，则[img=15x19]1803036072fe5ff.png[/img]在基[img=57x23]18030360978ad88.png[/img]下的矩阵为___________.
A: [img=126x61]18030360a2f1215.png[/img]
B: [img=126x61]18030360ae35622.png[/img]
C: [img=126x61]18030360bad2502.png[/img]
D: [img=126x61]18030360c7b8c4b.png[/img]
A: [img=126x61]18030360a2f1215.png[/img]
B: [img=126x61]18030360ae35622.png[/img]
C: [img=126x61]18030360bad2502.png[/img]
D: [img=126x61]18030360c7b8c4b.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]…
- 设随机变量[img=52x13]17e0c0edb27595a.gif[/img]，[img=60x31]17e0c0edbed05c6.gif[/img]，X与Y相互独立，则[img=90x14]17e0c0edcb304a8.gif[/img]= A: -13 B: 15 C: 19 D: 23
- 1.设随机变量X的密度为[img=186x61]18034ea953ec9dd.png[/img]则常数A=________，概率[img=146x25]18034ea95d30d08.png[/img]__________. A: A=2，P(X>1|X<2)=[img=39x24]18034ea9659b618.png[/img] B: A=-2，P(X>1|X<2)=[img=39x24]18034ea9659b618.png[/img] C: A=2，P(X>1|X<2)=[img=47x44]18034ea9768a8c2.png[/img] D: A=-2，P(X>1|X<2)=[img=47x44]18034ea9768a8c2.png[/img]