设[tex=4.0x1.214]NNaSwSVaeymDhVR1pI1Um8/VwxgkkdF6GyZ4V67o+9w=[/tex]，求[tex=1.071x1.214]6svmbb+oZ3Rd91HR5OCBgA==[/tex].
举一反三
- 设[tex=7.714x1.429]bGpkHkK071Ih1hPrr5NxjWJPhZ9j5mdUidKJLTUIthwc0W9G35n4lb/LxcZjuCpi[/tex]，求[tex=1.071x1.214]6svmbb+oZ3Rd91HR5OCBgA==[/tex]及[tex=2.643x1.357]pgk8DN8Dx76lFXSZdZi2UwCB2v21PZQs7KCbAVDgDM8=[/tex].
- 求下列函数的微分[tex=1.071x1.214]6svmbb+oZ3Rd91HR5OCBgA==[/tex]：[tex=6.143x1.5]d3FVu7rhHZ89Z1d3HMPZ36MtRP05NZJbfW31Bj2LamOTo0dJAap7tGONoRMmm9+e[/tex]
- 求下列函数的微分[tex=1.071x1.214]6svmbb+oZ3Rd91HR5OCBgA==[/tex]：[tex=3.5x1.429]73QYgEN6kal6P3JBsNxp8wYf0rkbtr9BtfgN1IlMm1E=[/tex]
- 求下列函数的微分[tex=1.071x1.214]6svmbb+oZ3Rd91HR5OCBgA==[/tex]：[tex=6.071x1.571]/Dfb1jzuUoICnR2nRIp2U05Z0/+3cCtqERlp4VZuN8I=[/tex]，其中[tex=0.5x1.214]++gGGJQcubEKWlse37f6tQ==[/tex]可微.
- 设 [tex=2.643x1.357]DJUMdJyw8QoCXHzomLtAYg==[/tex]的联合概率密度函数[tex=15.357x2.5]s59y2K1bDNChzmHwfrn1oSTsviLjQQg8wI3c526C3yzphma1gEnKmY1d0GOhcgpDrVk0S0HYvJc5zHg0mP64fWLTa9uXbGqrZeHsMUNHgnE=[/tex]试求：(1) 常数[tex=1.071x1.214]z0hROCnScDTSmsGIsah7lg==[/tex](2[tex=1.286x1.357]/uxB8bcBwZIIynmCK0zb3w==[/tex]的边缘概率密度;(3)[tex=5.714x1.357]hFwvmFy7d445I67u1TIsQQ==[/tex](4) 条件概率密度[tex=3.5x1.357]HORQgHJxZ7uz7C/XOzaMPQ==[/tex](5)[tex=7.857x1.357]NtXObZzFHwLX7QJ0M/bVDYIz97XcCiIe6f1XEIM9WY4=[/tex]