假设 [tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex] 是[tex=2.429x1.071]fYRl1cpBZV0k8ULAvI7FIg==[/tex]矩阵,试证:a) 对任意常数 [tex=2.571x1.0]VtY7jm6mc9rzSkWtkYe1NLpnuWB7PUTxqEY9UAy25cI=[/tex] 都有[tex=14.643x1.357]yhC9Vgi5kFQN6aI/CUtvlMWSdKde9g7Ys1XchUj0pwQCXAEJtfAZY5zTEHfYhL/AzIx9Ex1xfNhYMIs4X6yL8CXjg6rrtN3nVXtOXtroS7k=[/tex]b) 对任意整数 [tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex] ,都有[tex=7.571x1.5]fQhSsBIjr0fi1PAOcGDZgnjcVNBezzcaM2QJuQ6VfC8=[/tex]( 当[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex]是负整数时, 规定[tex=10.5x1.786]wiQyS+D4jxoqMG/+eBuXLcPLSSGKOnNKFNz4ahU1kLHIxNIgDCUTNuDb3G2FmBvQLnGxwWgC3ZTOjfpAYEo3HQ==[/tex])
举一反三
- 假设[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]是[tex=2.429x1.071]fYRl1cpBZV0k8ULAvI7FIg==[/tex]矩阵,试证:对任意整数[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex],都有[tex=7.714x1.5]wiQyS+D4jxoqMG/+eBuXLQOMSIjzFckfsGPR4aGujdk=[/tex].(当[tex=0.571x1.0]rFc/sfAAuCOtzhevhoREeA==[/tex]是负整数时,规定[tex=10.857x1.786]wiQyS+D4jxoqMG/+eBuXLcPLSSGKOnNKFNz4ahU1kLHIxNIgDCUTNuDb3G2FmBvQLnGxwWgC3ZTOjfpAYEo3HQ==[/tex]).
- 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']
- 6个顶点11条边的所有非同构的连通的简单非平面图有[tex=2.143x2.429]iP+B62/T05A6ZTM0eeaWiQ==[/tex]个,其中有[tex=2.143x2.429]ndZSw3zT0QTOVLVdoUto1Q==[/tex]个含子图[tex=1.786x1.286]J+vVZa2YaMpc6mJBbqVvWw==[/tex],有[tex=2.143x2.429]lmhx48evnQMhi03NovPXig==[/tex]个含与[tex=1.214x1.214]kFXZ1uR8GjycbJx+Ts2kyQ==[/tex]同胚的子图。供选择的答案[tex=3.071x1.214]3KinXFh3SXhZ7nIe1y9KEV6aadxhhJWeEy6Dij1iObdMUZkY6ZA5J2dVVjPSuhEf[/tex]:(1) 1 ;(2) 2 ;(3) 3 ; (4) 4 ;(5) 5 ;(6) 6 ; (7) 7 ; (8) 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=