• 2022-06-15
    设[tex=7.5x1.357]OsvyXUgMLENbtbfXN+BMUByzdDrQiDppC7R9XXEDBuc=[/tex], 求[tex=1.357x1.214]Jmx7/fRBc64FxRwtSFkinQ==[/tex]
  • [tex=28.286x4.786]GM0pWu3nDt9So6VZEl5F9CmVyGHbWHBdDLM1QBrFPBmbRsAq1ISls9pvqs84kH+fBmk1SBPuszOolzXHdMzbOW8TbF8ysErFtPXendSmgyUpVxZtwFEpnjyrfIvVCpVrGx49NtepVbM8az/pQocXPCMurkkeEFC2tRw1V6i1I/hRt9hgO0h2csPt9Ulrqc/9mutog9I09dKbEr2QcXBnYpIHJcGpgXlGwqze01OL5pPOMAZojV2Zd0kk5SMdKxT2[/tex]

    内容

    • 0

      设[tex=8.429x1.357]nrpdm/CWmnzWBrNVydZQ4OwFYiTQ3q0L6zS4h3ythMgdg0CLDO+FStyCKlQj3C8a[/tex],求x和y

    • 1

      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]

    • 2

      设二元关系[tex=14.5x1.357]nWKfumG3X+P6w5DlualfqW9XDw6gDTNxW+uTplqfI/x/OgHpgOK3lVLpVzdI3yhj[/tex],试求 [tex=2.429x1.357]VpxpuJ/p+FjXGa+AnkH98A==[/tex]与[tex=2.286x1.357]2EkdX8/PuVShcU6F4+x0xg==[/tex]

    • 3

      设随机变量X的概率密度为[tex=1.857x1.357]BGkv0wKMIn2R4tUsMDFEFA==[/tex],求[tex=2.714x1.214]jacSJ4coCvuTfFjPJkXs5g==[/tex]的概率密度.

    • 4

      若x为自变量t,求[tex=1.5x1.429]5W5tOYbJ+LlsRP2dMsi4byxwtjvvL/3u7NEzPV5PWp0=[/tex],设:[tex=3.286x2.429]Z7quRs/e7a1u866Z5LdsV0IqhzCCf4wq0xg1PYt4Hyg=[/tex]