设 [tex=2.5x1.286]oAG1ag4HUGNxikHpPyMaJQ==[/tex] 是任意两个集合，证明对偶律：[tex=9.429x1.286]wIP2ePoTukb4zdcili3VghzT3/YfjD9XXSvJD9nFkqBE8tj1SjmlLwhI/tmX4fXN[/tex]
举一反三
- 以4，9，1为为插值节点，求\(\sqrt x \)的lagrange的插值多项式 A: \( {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) + {1 \over {24}}(x - 4)(x - 9)\) B: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) + {1 \over {24}}(x - 4)(x - 9)\) C: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x +1) + {1 \over {24}}(x - 4)(x - 9)\) D: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) - {1 \over {24}}(x - 4)(x - 9)\)
- 设 A, B, C 是任意 3 个事件, 且 [tex=4.0x1.357]gAfOC6+v8lI5jWycgmtUbw==[/tex], 证明:(1) [tex=19.857x1.357]8owXj+fVlIkQio4ts8wme7XuIMyJr/SdaUYNpWu84lppg2m933119Vcu5zrXANjkjqGDC6Wa66Fr3flNynEZUQ==[/tex];(2) [tex=15.071x1.357]N4VhiXOswKqUOr+ZDWdSH53Hwai7otgDY/NY6r3RVghbS/xnrQmOwzaCNYB8kkIG[/tex] ; (3) [tex=9.571x1.429]wVEpJVOWDPAN0MT8WbKaw5SkHXMnk9EI9I+4jfD8KrzywdyPB4UkK70CHV+0xnXD[/tex]
- 9判别下列函数是否是周期函数,若是周期函数,求其周期 :(1) [tex=8.357x1.357]jijpvC8Aw74QOOOJh5Va05j3PtA64Pms1Q5qDGlqeN4=[/tex](2) [tex=5.643x1.357]TG5DUF3HrCbhIJWDEcp5Pj9u3e2PUgpbN4NJQ6DZXLw=[/tex](3) [tex=5.714x1.357]SBxtvKszj8+jJcycMEKn5vqfhi5GLWqH4Gac9QRbIHc=[/tex](4) [tex=6.929x1.357]NZ5EVFRfE4pFsgkbEOhFkNg5/qZx8geAT5eL+yzbq1Q=[/tex]
- 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]。
- 从供选择的答案中选出填入叙述中的方框内的正确答案计算非同构的根树的个数(1) 2 个顶点非同构的根树有 [tex=2.143x2.429]rVbjoKgaBYChmT2nPEBA4Q==[/tex] 个(2) 3 个顶点非同构的根树有 [tex=2.143x2.429]ndZSw3zT0QTOVLVdoUto1Q==[/tex] 个(3) 4 个顶点非同构的根树有 [tex=2.143x2.429]lmhx48evnQMhi03NovPXig==[/tex] 个(4) 5 个顶点非同构的根树有 [tex=2.214x2.429]ZPUE0nZuXRHoore7NT++rQ==[/tex] 个供选择的答案[tex=6.071x1.286]GZbiT2P8T8KVyVUEWQpYyjIiVTkGekbnZrmhPI/Gp54=[/tex]：① 1; ② 2; ③ 3; ④ 4; ⑤ 5; ⑥ 6; ⑦ 7; ⑧ 8; ⑨ 9; ⑩ 10