1/3×2/5+1/5×2/7+1/7×2/9+1/9×2/11+1/11×2/13 算式

1+3+5+7+.+（2n-1) (3+5/7-2/3)×(1/5+1/7+1/13)-(1/5-1/7+1/13)×3+(1/5+1/7+1/13)×(2/3-7/5)有一个打错了(3+5/7-2/3)×(1/5+1/7+1/13)-(1/5-1/7+1/13)×3+(1/5+1/7+1/13)×(2/3-7/5) 1/3+1/5+1/7+.+1/2n+1 -3/7+3/2+1+-5 2/7*20%+5/7*1/5 求矩阵最大特征根特征向量[1 5/7 5/6 5 5/27/5 1 6/7 7 7/26/5 6/7 1 6 31/5 1/7 1/6 1 1/22/5 2/7 1/3 2][1 5/7 5/6 5 5/2 7/5 1 6/7 7 7/26/5 6/7 1 6 31/5 1/7 1/6 1 1/22/5 2/7 1/3 2 1] 找出下面数字的规律 填空白处的数字7 7 2 5 7 5 3 5 7 4 7 3 7 4 7 5 5 3 7 5 7 3 7 7 7 5 5 3 5 7 5 4 4 7 5 7 7 5 7 5 4 7 5 3 7 __ 7 2 5 7 7 4 5 7 5 7 7 3 1 4 7 7 5 4 7 7 4 5 7 2 7 7 4 7 5 7 2 7 7 3 7 7 5 4 7 7 7 4 7 7 5 4 7 7 3 4 4 7 5 7 3/2 x 5/7 - (-5/7)x5/2 +(-1/2) 除以7/5 等于多少, 用Matlab用计算特征值和特征向量1 1/7 1/5 1/3 1/5 1/67 1 7/5 7/3 7/5 7/65 5/7 1 5/3 5/8 5/63 3/7 3/5 1 3/5 1/25 5/7 8/5 5/3 1 5/66 6/7 6/5 2 6/5 1 -|-2/3-(+2/3)|-|(-1/5)+(-2/5)| |4/7-2/5|-|3/5-7/9|+|2/9-3/7| 3+5+7+.+(2n+1)= 1、2、3、4、5、6、7 1,2,3,4,5,6,7, 1,2 ,3,4,5,6,7 1+2-3+4-5+6-7 1,2,3,5,7,11. 1+2+3+4+5+6+7 1,2,3,4,5,6,7