设X为连续型随机变量,若[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]皆为常数,则下列等式中不恒成立的是
未知类型:{'options': ['[tex=8.929x1.357]PkEtH/pDQZCZQPWDfGJfpCr47ZyeOHOSQxPuBvVouIc=[/tex]', '[tex=5.0x1.357]sqH6r7YQVIMa84hRkVMwwQ==[/tex]', '[tex=6.214x1.286]r7KwjVSQWkObBARrqtRNeUQ5+//3heqTO5xSr2HubXU=[/tex]', '[tex=9.929x1.286]cV51IFAhucjdQSQLt/6a1yYAb13swT9V2+8C+B+bYbY=[/tex]'], 'type': 102}
未知类型:{'options': ['[tex=8.929x1.357]PkEtH/pDQZCZQPWDfGJfpCr47ZyeOHOSQxPuBvVouIc=[/tex]', '[tex=5.0x1.357]sqH6r7YQVIMa84hRkVMwwQ==[/tex]', '[tex=6.214x1.286]r7KwjVSQWkObBARrqtRNeUQ5+//3heqTO5xSr2HubXU=[/tex]', '[tex=9.929x1.286]cV51IFAhucjdQSQLt/6a1yYAb13swT9V2+8C+B+bYbY=[/tex]'], 'type': 102}
举一反三
- 随机变量[tex=0.5x1.286]cFLrzlMvECfU5CTqcvierw==[/tex]分别以概率0.4、[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]、[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]和[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex]取值1、2、3、4,并且[tex=3.071x1.286]fknOBgzbjEu52cPH0WBW3g==[/tex],[tex=3.071x1.286]UAJJxdfCoB8SKuppr0cT/w==[/tex].求[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]、[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex]。
- 向量[tex=5.643x1.286]UOUVlYY3Owd/9Y+4aGhD2Q==[/tex]在[tex=4.786x1.286]x/DRKltwGOjd6FFY9joZ6Q==[/tex]上的投影[tex=3.214x1.286]HwD6aHO6Qt0l6J++EPGgPBkdil9ILD3xu4YblbhvSoE=[/tex][input=type:blank,size:6][/input] ,[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]在[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]上的投影[tex=3.143x1.286]HwD6aHO6Qt0l6J++EPGgPJ4STKvTqeKlzMVUIz66NNQ=[/tex][input=type:blank,size:6][/input] .
- 设[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]是有理数,满足[tex=9.214x2.929]wLLnuhaTkejykG34Lose4Gk3bDdglgIOUPyksgtxtXmt1sHAbktViJ8p1ePynplK3+wsNPKnCMhi2L94ONh39NTRjZdrdBEvRo1TQVd9L2o=[/tex],求[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]的值。
- 设随机变量X服从标准正态分布且[tex=8.929x1.357]UyIPzzmSPy+y9K3ktmo8Sj88zx2wN7ui/c7ujLSD5lE=[/tex],则 未知类型:{'options': ['[tex=8.714x1.357]NVbaNkFyV6YeaWZx1XvZN+SleGs5MzSVf6LVGEtQo2g=[/tex]', '[tex=9.214x1.357]NVbaNkFyV6YeaWZx1XvZN9FiQ+4CzxSajWZuOIxLTrM=[/tex]', '[tex=8.714x1.357]NVbaNkFyV6YeaWZx1XvZN0R9eGpbYp+aabsB+B6jRG4=[/tex]', '[tex=8.143x1.357]28VTjzaUpluF8SlGpvNhi2/bLeyx1wl1nJbp+jPM1hM=[/tex]'], 'type': 102}
- 如果正数[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex],[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex],[tex=0.571x1.286]E8TCNnEPtMKJ0mC2xxh0/Q==[/tex]满足[tex=6.143x1.286]ZmgY4IYKNAnTxjSaOa1RjQ==[/tex],那么 未知类型:{'options': ['[tex=4.429x1.286]LJI1FiqfFfvLk57V4PrnIg==[/tex],且等号成立时[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex],[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex],[tex=0.571x1.286]E8TCNnEPtMKJ0mC2xxh0/Q==[/tex]的取值唯一', '[tex=4.429x1.286]TX9Qz0sE7bWEvnntsBl/HA==[/tex],且等号成立时[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex],[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex],[tex=0.571x1.286]E8TCNnEPtMKJ0mC2xxh0/Q==[/tex]的取值唯一', '[tex=4.429x1.286]LJI1FiqfFfvLk57V4PrnIg==[/tex],且等号成立时[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex],[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex],[tex=0.571x1.286]E8TCNnEPtMKJ0mC2xxh0/Q==[/tex]的取值不唯一', '[tex=4.429x1.286]TX9Qz0sE7bWEvnntsBl/HA==[/tex],且等号成立时[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex],[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex],[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex],[tex=0.571x1.286]E8TCNnEPtMKJ0mC2xxh0/Q==[/tex]的取值不唯一', '以上均不正确'], 'type': 102}