可增强[tex=1.929x1.286]spc0iegyHRrZ4h6kqFoh8Q==[/tex]活性的是
未知类型:{'options': ['因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex]', '因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex]', '因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex][tex=0.571x1.286]RM7SKoKhXo5BhokAgZJ3fQ==[/tex]', '因子[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]', '因子[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex]'], 'type': 102}
未知类型:{'options': ['因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex]', '因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex]', '因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex][tex=0.571x1.286]RM7SKoKhXo5BhokAgZJ3fQ==[/tex]', '因子[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]', '因子[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex]'], 'type': 102}
举一反三
- 可增强[tex=1.429x1.286]J5RaB/Go44W7OxdoRpY7pg==[/tex]活性的是 未知类型:{'options': ['因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex]', '因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex]', '因子[tex=0.857x1.286]ZpwhzmyivskaH5M1X7ozaQ==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex][tex=0.571x1.286]RM7SKoKhXo5BhokAgZJ3fQ==[/tex]', '因子[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]', '因子[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex][tex=1.071x1.286]z/n3O5czDPDS+NszdlMy4g==[/tex]'], 'type': 102}
- 设随机变量[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]和[tex=0.857x1.286]h9C4nePGcGllh55hxKIsUw==[/tex]都服从[tex=2.143x1.286]dboSCjP3Fn5+xkkJFCNE+A==[/tex]分布,证明: “[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]和[tex=0.857x1.286]h9C4nePGcGllh55hxKIsUw==[/tex]不相关”与“[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]和[tex=0.857x1.286]h9C4nePGcGllh55hxKIsUw==[/tex]独立”等价.
- 设随机变量 [tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex] 服从参数 [tex=3.143x1.286]+YbFeYrJMNsGfJf0KraF7SPelDX5xgqsp9CtXCLBwA8=[/tex] 的指数分布,则 E(X)= [input=type:blank,size:4][/input], D(X) =[input=type:blank,size:4][/input].
- 若[tex=9.143x1.286]q0YOOtLF9hwo4O7JAlWgxg83Id/7fltxVRWuyyNpn3I=[/tex],则 未知类型:{'options': ['[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]和[tex=0.857x1.286]h9C4nePGcGllh55hxKIsUw==[/tex]相互独立', '[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]与[tex=0.857x1.286]h9C4nePGcGllh55hxKIsUw==[/tex]不相关', '[tex=9.357x1.286]yHxVvI6MGHt4oq+xh/n7TYyFoSO2IItQrnijzP2hzzg=[/tex]', '[tex=11.714x1.286]jkB8Igz3/R76+8O6IBql5PboiiKXx/vnBBG08yIagJw=[/tex]'], 'type': 102}
- 设[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]和[tex=0.857x1.286]h9C4nePGcGllh55hxKIsUw==[/tex]是两个相互独立的随机变量,[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]在[tex=2.929x1.286]kvrkODQf0L3CKREOEdSkuA==[/tex]上服从均匀分布,[tex=0.857x1.286]h9C4nePGcGllh55hxKIsUw==[/tex]的概率密度为[tex=10.571x2.429]DRJq+C1mHjswrEZ8FtvX7HNGAPrBLJ6gzRGG2ilTN7MM55jZEydQmT0AUl0Qb5hAT5k9ols3J/KpgflWFdX4TQ==[/tex],求:(1)[tex=0.929x1.286]uswT/CEcOIwMpCvTz/zeaA==[/tex]和[tex=0.857x1.286]h9C4nePGcGllh55hxKIsUw==[/tex]的联合概率密度;(2)[tex=4.714x1.286]dbgFLPFxgdKKXnbc/gnthjs3iie6rgn/UEwrXH27vHI=[/tex] .