1、Matlab中求矩阵的秩
>> a = rand(6)
a =
0.8147 0.2785 0.9572 0.7922 0.6787 0.7060
0.9058 0.5469 0.4854 0.9595 0.7577 0.0318
0.1270 0.9575 0.8003 0.6557 0.7431 0.2769
0.9134 0.9649 0.1419 0.0357 0.3922 0.0462
0.6324 0.1576 0.4218 0.8491 0.6555 0.0971
0.0975 0.9706 0.9157 0.9340 0.1712 0.8235
>> r = rank(a)
r =
6
2、Matlab中求矩阵的迹
>> m = magic(8)
m =
64 2 3 61 60 6 7 57
9 55 54 12 13 51 50 16
17 47 46 20 21 43 42 24
40 26 27 37 36 30 31 33
32 34 35 29 28 38 39 25
41 23 22 44 45 19 18 48
49 15 14 52 53 11 10 56
8 58 59 5 4 62 63 1
>> t = trace(m)
t =
260
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