• 2022-06-16
    试证明 : 当 [tex=4.143x1.071]6idyQcG7/Vy7BKdtLzpTsg==[/tex] 时, [tex=2.929x1.286]73w1LAidoyCZfsTtaZ2pRw==[/tex]
  • 要证 [tex=3.071x1.286]C1pszcvxeZJYPgEJwmhJnA==[/tex], 即证 [tex=5.643x1.071]DQt+wwrlmA3AaWWraUJR3llyzSOOTW/f7frTB42Yhco=[/tex], 亦即 [tex=4.786x2.429]LJWZ13bstgItlMou1ozofmpQGE7+cggCbIxREZsaQMTkVSK+iUzQ0PehHcHrKjjg[/tex].为此,设 [tex=4.643x2.429]aYi37ppQwcNsp2/AHvUs8fvG0qq6yB+g1U9PTIBegq8=[/tex], 则由拉格朗日中值定理,有[tex=17.357x2.643]09zrgxzFrmD7TI8TUkw2mZjaduiqECruUeerzxvqVsN/fhktUiNS8PV6AqyhnfbpPsgyez4mkvZdDPn5HmX4+liMPewzVte9r0bbRflTkE4=[/tex]而已知 [tex=4.143x1.071]6idyQcG7/Vy7BKdtLzpTsg==[/tex], 故[tex=3.286x1.214]N8p2tI5WryIPt+DCGCREWA==[/tex], 于是 [tex=6.429x2.429]09zrgxzFrmD7TI8TUkw2mZjaduiqECruUeerzxvqVsOzwMhnqCkVNEJn2abikU/Q[/tex], 即 [tex=3.071x1.286]8+q8Zy+SBFmCWKSGCtkThA==[/tex].

    内容

    • 0

      股骨颈的前倾角是 未知类型:{'options': ['[tex=3.643x1.071]hjvGfvBT8B+o6bOOcdWXF5QtPNe23wayuETfi+ebEmo=[/tex]', '[tex=4.143x1.071]ooMjGHaV3mxCqOJxe8ya4/ri/L/DLPfYh2hR9Y7mOAs=[/tex]', '[tex=4.143x1.071]UR0cMJrtHmuI66bz8jj6OUFtwU33gDGKsnOPqXZF370=[/tex]', '[tex=4.143x1.071]D7l3Yj9BtkbXpB5yRRMryZ4UPTbppQjvjnisXqoHN7g=[/tex]', '[tex=4.143x1.071]rz3S1KGfJWj6GrromcIlfbCnU/UqN6Ig4eB3PkjSou8=[/tex]'], 'type': 102}

    • 1

      设 [tex=2.929x1.286]Rn+Zd2pB8Xe2ZxsQLwdnDw==[/tex] 分别为 [tex=2.214x1.143]v8mnZ12+ZL3wvk5cLchvyZqfP4n3ShCe2T0BD2Oh7Vo=[/tex] 中对称,反对称,上三角方阵构成的子空间. 证明 1) [tex=5.143x1.286]v8mnZ12+ZL3wvk5cLchvyUoelscAHzTib2ahwtMT1RE=[/tex];2) [tex=5.857x1.286]WnM0Ov79B0pf14U+8Ix2CzzcZ5axSciPZqxz41d7HhSinKD+0HIZdAWGutM4Lmm1[/tex].

    • 2

      证明:[tex=5.429x1.5]+Lv/8ySxp3wsmNnr68haBlzIJuiXDiGcYx3cYlzyd/w=[/tex],当且仅当[tex=4.5x1.357]w6i1ioP71q3T+d1GFTtU7w==[/tex].

    • 3

      当X服从参数为[tex=0.643x1.0]f9ECb56a0KLfwkSKv7TvaQ==[/tex]的指数分布时,试求[tex=0.857x1.0]N7iCrOsS+NNEUUlnsYCi1g==[/tex]的[tex=0.571x1.0]QcnBkHbntawstmyl7KNMng==[/tex]分位数及中位数.

    • 4

      设 [tex=1.857x1.286]G6WxJ307HB2e1l7Qz3uNbQ==[/tex] 是 [tex=1.214x1.214]YiUtaNKPTk7KugrVopd0dw==[/tex] 上非负可积函数, 令 [tex=8.714x2.786]cdfTT98uynIfnWtOc04xMnMlLsrcQvOCPFGFMFx624HrOLdcdjP3BLi0v0rYy7XG[/tex], [tex=2.929x1.286]w1wfg7lA4Xi+e35DSmgwpYIyUafk64naddNkWqokHEo=[/tex]. 若 [tex=4.286x1.571]b2pfZIJQDpEi6CrPifogmLYUireEc4QlLp8+SSXOPAw=[/tex], 试证明 [tex=6.5x2.214]VIqzqtg8CBIyAzz0p5J8nHLd598dwb6A7xgGjL/6Osc=[/tex].