设[tex=4.357x1.286]Sj/JOIq8D/l1bCecGAbz+Q==[/tex]均为[tex=0.643x1.286]ZsZs11iKEvfmzDIurZth8g==[/tex]阶方阵，[tex=3.071x1.286]1VKr3b6VhYI6fRsG5wy8iVwBaM9k6FZgq/Su4dJ7dhE=[/tex]且[tex=4.286x1.286]hpTWmTb2W+aHIwMT3dJckQ==[/tex]，[tex=0.786x1.286]YggwMQ4w3PxfhkmL0NfgdQ==[/tex]为[tex=0.643x1.286]ZsZs11iKEvfmzDIurZth8g==[/tex]阶单位矩阵，（1）求分块矩阵的乘积[tex=12.643x2.786]075gCzZzsMRb6HYXYk9X95pZ6oa7HMppyhB441ZvYm+8anJlmZMPInNXL8gnDXRBmrdtBdpW1EX/BK4/rDB/pVYY+AuEiEZDcxJ9B290d7yQJDJWXRAmS+HHNYmBxKdE95z98/YGeiO+PNU0PcmF0Pbfnjm78l96Y/z+2eDKdGQ=[/tex] . （2）证明：[tex=9.643x2.786]Uyz5s0rmQIddjb5Jc2T/YSwnwxLJ9Z0Yd88BZD2//sramD6rSrLmaXcDSI7d7lwkiv2zpDugnZ+r24mAr60WbcAZRqsSH4QTSFKjrGidryQ=[/tex] .
举一反三
- 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']
- 【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=
- 下面语句的输出结果是？range(len('HelloWorld')) A: [1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11] B: 11 C: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] D: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
- 设DES加密算法中的一个S盒为： 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 14 4 13 1 2 15 11 8 3 10 6 12 5 9 0 7 0 15 7 4 14 2 13 1 10 6 12 11 9 5 3 8 4 1 14 8 13 6 2 11 15 12 9 7 3 10 5 0 15 12 8 2 4 9 1 7 5 11 A: 1010 B: 0001 C: 1011 D: 0111