设[tex=4.429x1.429]2O15Tzitxc9IeanRHiniaEO3U3j38GE153+Hm/jios4=[/tex]，求[tex=3.143x1.571]OGxjxIvyeEWgNMlO1bAa8w==[/tex]。
举一反三
- 设[tex=0.857x1.0]N7iCrOsS+NNEUUlnsYCi1g==[/tex]的分布律为：[img=242x105]1790c2a61ccdfd0.jpg[/img]求：（1）[tex=1.571x1.0]pGYiD18r66gsUrCx6KlaQA==[/tex]；（2）[tex=4.429x1.357]3sp5UFGvGZj4HHBU1G6J+Q==[/tex]；（3）[tex=3.143x1.571]oibOEPzqOMutspJWiy6hN9XiV3OZWuBA3Kqc1r8O6C4=[/tex]；（4）[tex=1.714x1.0]X5FdyNclpf2RVybCBYcR8g==[/tex]。
- 求椭圆 [tex=4.429x1.429]lnJ5Ig/DyTnqP4uxMDP/b3bdbRC0tk09HplPHYouW8w=[/tex] 在点 [tex=2.286x1.357]t/28KdVrg5JGYKaENU0GEw==[/tex] 及 [tex=3.143x1.571]VIamMRnOxFdJlXx3Bic9hw==[/tex] 处的曲率半径.
- 由非空集合X的所有子集构成的集合称为X的幂集，记作[tex=1.143x1.214]6fgP1j+0v37iZFMJocAU+g==[/tex].（1）设X={a,b,c}，求[tex=1.143x1.214]6fgP1j+0v37iZFMJocAU+g==[/tex].（2）设X是由n个元素组成的有限集，证明[tex=1.143x1.214]6fgP1j+0v37iZFMJocAU+g==[/tex]中含有[tex=1.0x1.0]j//x0/Z+ltpf5R8ThFOpMA==[/tex]个元素.
- 设[tex=21.214x2.786]YHIKtHtTy6YeetIBukGWJ/+4CPibC+H1hzFh9VOwgL0S9GN2pUoehfDbgBGc5EnrdWI+XuY+Ymu+pDcK9HiZ9yXnaA2Bu4G6/6u1St7CLSMx59I82bjv1bCI2gEnrsJNql1frne8KsMSeBQW1cNKcuTaRB/F+4LAgzRxiKyGrOQiHFMyz8xDbT+BEy6KACG1U8FMEJreyBo/QSwsxRx8RDhp3OZ7UFFTQRocd2V6R+rERHrZxrt9oGOmh+8uIFvx9eVIIoeiy4uSVcNteqe6RBKTF8FWle9nj+GzCitqy6E=[/tex]且A+2B-C=O，求x，y，u，v的值.
- 设[tex=21.214x2.786]YHIKtHtTy6YeetIBukGWJ/+4CPibC+H1hzFh9VOwgL0S9GN2pUoehfDbgBGc5EnrdWI+XuY+Ymu+pDcK9HiZ9yXnaA2Bu4G6/6u1St7CLSMx59I82bjv1bCI2gEnrsJNql1frne8KsMSeBQW1cNKcuTaRB/F+4LAgzRxiKyGrOQiHFMyz8xDbT+BEy6KACG1U8FMEJreyBo/QSwsxRx8RDhp3OZ7UFFTQRocd2V6R+rERHrZxrt9oGOmh+8uIFvx9eVIIoeiy4uSVcNteqe6RBKTF8FWle9nj+GzCitqy6E=[/tex]且A+2B-C=O，求x，y，u，v的值.