设向量[tex=4.286x1.286]aZIDwZc2ktRVCPQTez3j0A==[/tex],[tex=5.0x1.286]MxusqE8JViPv6gGLUyjpUw==[/tex],求以[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]、[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]为邻边的平行四边形的面积.
举一反三
- 设向量[tex=4.286x1.286]aZIDwZc2ktRVCPQTez3j0A==[/tex],[tex=5.0x1.286]MxusqE8JViPv6gGLUyjpUw==[/tex],求以[tex=1.429x1.286]+fmtub6g+tF54Tl5ap2zBg==[/tex]为邻边的平行四边形的面积 .
- 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。
- 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=4.857x1.286]D8V0vx8GIFkaW9Wr3cTkgQ==[/tex],[tex=5.5x1.286]SuF9ioGqfsEWhP0FxHJm8A==[/tex],[tex=5.5x1.286]F2znh+dupic+SmqBspcaUg==[/tex],则[tex=3.857x1.286]0LBROb+xu2bkynvd1D9LQ6KBMCF7Mpq/AsJcSDXkvM4=[/tex][input=type:blank,size:4][/input],[tex=3.071x1.286]9A5Nz54EJJI8b5zx+YqJEclc3OqmWNKnXJzpde/AUKA=[/tex][input=type:blank,size:4][/input];向量[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]在向量[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]上的投影[tex=3.286x1.286]wGfVdUMgAn5LMrF8O6yYwV3vkaAQ2TFHZKAYsbp88SY=[/tex][input=type:blank,size:4][/input];与向量[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]、[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]都垂直且模为3的向量为[input=type:blank,size:4][/input];以向量[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]、[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]为邻边的平行四边形的面积为[input=type:blank,size:4][/input];以向量[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]、[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]与[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex]为相邻三边的平行六面体的体积为[input=type:blank,size:4][/input].
- 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] .