• 2022-06-16
    设随机变量 [tex=2.643x1.357]DJUMdJyw8QoCXHzomLtAYg==[/tex]的联合密度函数为[tex=20.0x2.929]dP4cQckxhVALWt3v5f2JJpEi/euhb8re9G12MIfV9Oq6aEByCH1A9OLwjYaOc3DdVPKr4rnJCvYqOgCh8Fd70jA7U+n01Lf3I/sGqas85sBanrfGxG5po32UheCw6VfOXg1QjJqaxBlmovwpk3GQfQ==[/tex]试求 [tex=3.571x1.357]HoyswooNhhJO1E1Yd8du9Q==[/tex]
  • 举一反三