设二维随机变量[tex=2.786x1.286]AG5D6gU/evQZlfwisXgzYw==[/tex]的联合密度函数为[tex=17.643x3.643]lJblPB9MNpIrc6Sy3BdmFY0caaqrhqD4gwf+7QHot1rtfDUbpZzDYIJpx7nOrjGBNlWIGzSwLVMYVwJL3s4HaWBEvp77HHTqJ+MR3njJsBk=[/tex]求 [tex=4.929x1.286]bstb6Acm/GnARrPc8f1uPw==[/tex] 的密度函数.
举一反三
- 设二维随机变量[tex=2.786x1.286]AG5D6gU/evQZlfwisXgzYw==[/tex]的联合密度函数为[p=align:center][tex=18.786x3.643]lJblPB9MNpIrc6Sy3BdmFTulnCSmzPh4E9xtF58toUCeK0TiyLWgTM9bJi3NqT2iMczjkKX1Q/Fre0z38dI9idnd/d01g0kUlwKQnBjmruYCuWyAPx5D0Mn+UYGqiADP[/tex]求 [tex=4.929x1.286]bstb6Acm/GnARrPc8f1uPw==[/tex] 的密度函数.
- 设二维随机变量[tex=2.786x1.286]AG5D6gU/evQZlfwisXgzYw==[/tex]的联合密度函数为[tex=16.714x4.786]lJblPB9MNpIrc6Sy3BdmFXJ0yfI4z+iB1nKJ7ROgWqzozTSmjcWBy4nK0qyrzRF+fp3JGr/6aI4tBX1cWLqkSZrOFvj/j80GqJYiLKrdxYXigp4zN34F6WQaHjyImTzH9KJpwLReFhK53LOUn9wn1Q==[/tex]求 [tex=11.071x1.357]lBv1hWdvvhZJGLvvUAYaKANuRisY6FOdORXdyZ/VvmB/d8xeqo9XbhIOUtx7b8nWZG6WLgRPobZqyCE4jDJR/g==[/tex]
- 二维随机变量[tex=2.786x1.286]AG5D6gU/evQZlfwisXgzYw==[/tex]在以[tex=2.929x1.286]3y4MkSHU4CkFowioH8YmWQ==[/tex]，[tex=2.143x1.286]VykF7BpO3NFT550xU7Tx1w==[/tex]，[tex=2.143x1.286]xFRFgvSxDEv0XaioRgmbFw==[/tex]为顶点的三角形区域上服从均匀分布，求[tex=4.929x1.286]bstb6Acm/GnARrPc8f1uPw==[/tex]的概率密度。
- 设随机变量[tex=2.786x1.286]AG5D6gU/evQZlfwisXgzYw==[/tex]的联合密度函数为[p=align:center][tex=14.143x3.643]lJblPB9MNpIrc6Sy3BdmFUO0inJrAJ+S9rWSLKaoQEwZArhdhamjfsTonNCB7tgOdWR/hKgLvbpk95zxo1Qj2FZaPRkK91X1tSDU6k59qEM=[/tex]求 [tex=4.286x1.357]n/CQ18GUhnUVt9w6H4KtW2FiusirI7U4IIl2+H1BcqE=[/tex] .
- 设随机变量[tex=2.786x1.286]AG5D6gU/evQZlfwisXgzYw==[/tex]的联合密度函数为[p=align:center][tex=12.643x3.643]lJblPB9MNpIrc6Sy3BdmFblHfEN66pBcu0QuHw83KIQ3cdudKq3vlH+DZ0H6zdGeW8uEDxfKFdi4ReFZRbtgP/bVRWUbaN7hKPugDB3/GcI=[/tex]求 [tex=9.429x1.357]3mx/zSqcilpFkVvGSt6vqzwBxGF2wXRFoaQYFr/1xmy0RxXWtAvv9CRYSZFadaLG[/tex]