设[tex=11.143x1.5]tybLZYAJ5RzKkQLib6uqQtqak7mxL3UjMWouMFBwKKg=[/tex]，求[tex=2.786x1.357]g1Wo3ALRzTk0js5m9GO2sA==[/tex].
举一反三
- 设[tex=10.714x1.5]tybLZYAJ5RzKkQLib6uqQiUMBw+bqf13JQ1LKvqcCGE=[/tex], 求[tex=2.786x1.357]g1Wo3ALRzTk0js5m9GO2sA==[/tex].
- 设[tex=13.857x2.714]Tnji2g3V1d+JA0VCk7EKFmktX5Np0YfK9cpuBrNPoyHiMaxtmpCjm2jpMDnHfa5xJmdEGqzEeLoCKqs/680V3RdfiwG2lLTui2TGGLAVAuw=[/tex]，求[tex=2.786x1.357]g1Wo3ALRzTk0js5m9GO2sA==[/tex]
- 设函数 [tex=12.571x2.357]OHpHlp08spOzUuoW7DEI8UQGU5oI0ymbpfLTaAsQGVreaSPi+43aPyPx6TTq0MR0BO0kwCd0ZA/DFao4/+UdUA==[/tex][br][/br]求[tex=2.786x1.357]g1Wo3ALRzTk0js5m9GO2sA==[/tex]的极值,并证明函数[tex=2.786x1.357]g1Wo3ALRzTk0js5m9GO2sA==[/tex]在点[tex=2.286x1.357]sVCzP1QNUT517zJi7AAZqw==[/tex] 处不取极值.[br][/br][br][/br]
- 设二元函数[tex=4.071x1.357]wv7dtiqAMpwq3KU42Pxfvw==[/tex]满足[tex=4.643x1.571]VLJ8fKwQgl8lcIrZ8DuFUA1Rtg+UqgXtd1CPSEAqjklDjD2l+W4GSfWe40Is+xZh[/tex]，[tex=4.714x1.5]49UFtdxdDKQlKWZMhTPj6shR0eIPbkJH+t/oKWAtDPo=[/tex]，[tex=3.857x1.357]BMa57oBdoLQIZV6TWJh7yQ==[/tex]，求[tex=2.786x1.357]g1Wo3ALRzTk0js5m9GO2sA==[/tex].
- 设二维离散随机变量[tex=2.5x1.357]PWg5V4GQQafckGNgbx6gmw==[/tex]的可能值为(0, 0)，(−1, 1)，(−1, 2)，(1, 0)，且取这些值的概率依次为1/6, 1/3, 1/12, 5/12，试求[tex=0.857x1.0]N7iCrOsS+NNEUUlnsYCi1g==[/tex]与[tex=0.643x1.0]O+viFNA0oHTwnBtQyi80Zw==[/tex] 各自的边际分布列．