If A-B=Ф, which of thefollowing conclusions is not possible? ( )
A: [img=52x20]1803a1c54cb1955.png[/img]
B: [img=51x19]1803a1c555ac1ed.png[/img]
C: [img=51x19]1803a1c55e66849.png[/img]
D: [img=52x20]1803a1c566bfec5.png[/img]
A: [img=52x20]1803a1c54cb1955.png[/img]
B: [img=51x19]1803a1c555ac1ed.png[/img]
C: [img=51x19]1803a1c55e66849.png[/img]
D: [img=52x20]1803a1c566bfec5.png[/img]
举一反三
- 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]
- 关于曲线[img=107x43]17da58d67b212a0.png[/img]的渐进线的说法,下列不正确的是( ) 未知类型：{'options': ['17da58d68a3b0be.png有一条渐近线,即铅直渐近线x=-1;', ' [img=52x20]17da58d68a3b0be.png[/img]有一条渐近线,即斜渐近线[img=52x19]17da58d69c32222.png[/img];', ' [img=52x20]17da58d68a3b0be.png[/img]有两条渐近线,即铅直渐近线x=-1和斜渐近线[img=52x19]17da58d69c32222.png[/img];', ' [img=52x20]17da58d68a3b0be.png[/img]有两条渐近线,即水平渐近线x=-1和斜渐近线[img=52x19]17da58d69c32222.png[/img]。'], 'type': 102}
- 设X与Y相互独立，均服从参数为1的指数分布，则P(X+Y<1) A: [img=84x24]18036de4b8088be.png[/img] B: [img=75x24]18036de4bf77b71.png[/img] C: [img=75x24]18036de4c8172a3.png[/img] D: =P(X<1)P(X<1) E: =P(X<0.5)+P(X<0.5) F: >P(X<1)
- 设X与Y相互独立，均服从参数为1的指数分布，则P(X+Y<1) A: [img=84x24]1803645ffb36da1.png[/img] B: [img=75x24]180364600306be0.png[/img] C: [img=75x24]180364600c8ab8b.png[/img] D: =P(X<1)P(X<1) E: =P(X<0.5)+P(X<0.5) F: >P(X<1)
- 设X与Y相互独立，均服从参数为1的指数分布，则P(X+Y<1) A: [img=84x24]18035b3d47a8410.png[/img] B: [img=75x24]18035b3d50597f9.png[/img] C: [img=75x24]18035b3d59275e6.png[/img] D: =P(X<1)P(X<1) E: =P(X<0.5)+P(X<0.5) F: >P(X<1)