Which of the following propositions is false,set A = {x,x is an integer and [img=60x23]1803a1c503ffa04.png[/img]} ? ( )
A: [img=113x25]1803a1c50cc3162.png[/img]
B: [img=139x25]1803a1c514e60ea.png[/img]
C: [img=51x22]1803a1c51dd52ef.png[/img]
D: {x|x is an integer and |x| <4} [img=33x22]1803a1c525cf1bd.png[/img]
A: [img=113x25]1803a1c50cc3162.png[/img]
B: [img=139x25]1803a1c514e60ea.png[/img]
C: [img=51x22]1803a1c51dd52ef.png[/img]
D: {x|x is an integer and |x| <4} [img=33x22]1803a1c525cf1bd.png[/img]
举一反三
- Which of the following propositions is false,set A = {x,x is an integer and[img=60x23]1803a1c6eebb7a3.png[/img]} ? ( ) A: [img=113x25]1803a1c6f77ce06.png[/img] B: [img=139x25]1803a1c7001fe79.png[/img] C: [img=51x22]1803a1c70863f61.png[/img] D: {x|x is an integer and |x| 4}[img=33x22]1803a1c711a7c63.png[/img]
- 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]
- 1.设随机变量X的密度为[img=186x61]17de8981070b17c.png[/img]则常数A=________，概率[img=146x25]17de8981130ab0e.png[/img]__________. 未知类型：{'options': ['A=2，P(X>;1|X<;2)=[img=39x24]17de89811f6f1b0.png[/img]', 'A=-2，P(X>;1|X<;2)=[img=39x24]17de89811f6f1b0.png[/img]', 'A=2，P(X>;1|X<;2)=[img=47x44]17de89812b3a28c.png[/img]', 'A=-2，P(X>;1|X<;2)=[img=47x44]17de89812b3a28c.png[/img]'], 'type': 102}
- 1.设随机变量X的密度为[img=186x61]17de8981070b17c.png[/img]则常数A=________，概率[img=146x25]17de8981130ab0e.png[/img]__________. 未知类型：{'options': ['A=2，P(X>;1|X<;2)=[img=39x24]17de89811f6f1b0.png[/img]', 'A=-2，P(X>;1|X<;2)=[img=39x24]17de89811f6f1b0.png[/img]', 'A=2，P(X>;1|X<;2)=[img=47x44]17de89812b3a28c.png[/img]', 'A=-2，P(X>;1|X<;2)=[img=47x44]17de89812b3a28c.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)