设[tex=3.714x1.214]hgbRosf+q/qb8NbRyf4qOg==[/tex]为群,a为G中阶为k的元素,集合[tex=12.5x1.286]aF6LJHLKDKdsTypjK5W0hzpqB7f67BMLDTLfQjmq8i1a98SpM2SMyzzaNvc0EME1MJ6RidLu+vW1vawE2o9X3g==[/tex]问[tex=2.714x1.357]TmDEQiIrOatdKqqrO/PPi9loE+y5wUvxNFxGtvDp3Q0FKwNGlzJWPnPyIAal8SRL[/tex]是否构成一个群,为什么?
举一反三
- 设[tex=3.714x1.214]hgbRosf+q/qb8NbRyf4qOg==[/tex]为群,a为G中阶为k的元素,集合[tex=12.5x1.286]aF6LJHLKDKdsTypjK5W0hzpqB7f67BMLDTLfQjmq8i1a98SpM2SMyzzaNvc0EME1MJ6RidLu+vW1vawE2o9X3g==[/tex]求[tex=1.214x1.214]4/SI0lYIYgzZiuBfmY4oYQ==[/tex]的基数
- set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- 【单选题】设X为连续型随机变量, 其概率密度: f(x)=Ax2, x∈(0,2); 其它为0. 求(1)A=(); (2) 分布函数F(x)=(); (3) P{1<X<2} (10.0分) A. (1)3/8; (2)x<0, F(x)=0; 0≤x<2, F(x)=1/8x³; x≥2, F(x)=1; (3) 7/8 B. (1)5/8; (2)x<0, F(x)=0; 0≤x<2, F(x)=1/8x³; x≥2, F(x)=0 (3) 1/8
- 【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=