若随机变量[tex=7.357x1.357]dycG3FqHJtU+tFCxBqOBPFyTarUldja+QRjP7IyLAG8=[/tex]，求[tex=5.143x1.357]2GeQcYbyAU32WABaaUdSMQ==[/tex]
举一反三
- 设[tex=7.357x1.357]HysYoWDSGxguSiaqkoRPg46pqFFKanoYIlwHEicWeZ06o4+hdqKeyssj1Co5eLzK[/tex]且[tex=5.143x1.357]VGFTIdNTAI1J1Ow1atnJhA==[/tex]求[tex=2.429x1.357]CxYX/ZintdcHwzIgjPeHeA==[/tex]
- 设[tex=7.357x1.357]HysYoWDSGxguSiaqkoRPg46pqFFKanoYIlwHEicWeZ06o4+hdqKeyssj1Co5eLzK[/tex]且[tex=5.143x1.357]VGFTIdNTAI1J1Ow1atnJhA==[/tex]求R的集合表达式
- 设随机变量(X,Y)的概率分布列为[img=345x154]178ab1c9ce3bc1b.png[/img]求[tex=1.571x1.0]JUrGU6ftUjxQCIr6CyfDwQ==[/tex],[tex=1.357x1.0]yL/7/hhyqgwzAX8jnIq3OQ==[/tex],[tex=4.357x1.357]LN0xwhQHSOeLwBClUlpHQw==[/tex].
- 对于以下两种情形:(1)x为自变量,(2)x为中间变量,求函数[tex=2.214x1.214]sy9gaFRMGlrH59gm9bWSDg==[/tex]的[tex=1.5x1.429]5W5tOYbJ+LlsRP2dMsi4byxwtjvvL/3u7NEzPV5PWp0=[/tex]
- 设随机变量X与Y，且D(X)=25 . D(Y)=36 .[tex=6.929x1.357]YRHgHmN/yZW92ECOHesamh6DUEs33HnR+2dxr68Tcr4=[/tex]求[tex=4.286x1.357]wxsI0NJpCsUWd6vdcOiJiw==[/tex]