What is general grey number?
未知类型：{'options': ['Assume that [img=81x28]17de92fba28a4ed.png[/img],then [img=21x28]17de92fbafd77df.png[/img]is called a general grey number.', 'Assume that [img=126x57]17de92fbbfb2fdb.png[/img],then [img=39x36]17de92fbcd31d6b.png[/img]is called a general grey number.', 'Assume that [img=126x57]17de92fbbfb2fdb.png[/img],then [img=28x31]17de92fbdd04b06.png[/img]is called a general grey number.', 'Assume that [img=126x57]17de92fbbfb2fdb.png[/img],then [img=19x28]17de92fbec1ad43.png[/img]is called a general grey number.'], 'type': 102}
未知类型：{'options': ['Assume that [img=81x28]17de92fba28a4ed.png[/img],then [img=21x28]17de92fbafd77df.png[/img]is called a general grey number.', 'Assume that [img=126x57]17de92fbbfb2fdb.png[/img],then [img=39x36]17de92fbcd31d6b.png[/img]is called a general grey number.', 'Assume that [img=126x57]17de92fbbfb2fdb.png[/img],then [img=28x31]17de92fbdd04b06.png[/img]is called a general grey number.', 'Assume that [img=126x57]17de92fbbfb2fdb.png[/img],then [img=19x28]17de92fbec1ad43.png[/img]is called a general grey number.'], 'type': 102}
举一反三
- 求不定积分[img=132x48]17da6537fc8dad6.png[/img]； （ ） A: -(4*(cos(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) B: (4*(sin(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) C: (4*(cos(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) D: (4*(cos(x/2)/2 + 2*cos(x/2)))/(17*exp(2*x))
- 已知随机变量X的分布列如下：[img=386x130]17e43ec4c459e73.png[/img]，则E(X)= A: 17/30 B: m未知，无法求出 C: -30/17 D: -17/30
- 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}
- 设集合[img=235x35]17e0bf8ae8a8338.png[/img],则A∪B=( ) 未知类型：{'options': ['{x|-1≤x<;2}', ' [img=110x35]17e0bf8af4dd8ac.png[/img]', ' {x|x<;2}', ' {x|1≤x<;2}'], 'type': 102}