matlab矩阵相乘
>>
>> A=[1,2,3]
A =
1 2 3
>>
>> B=[3;2;1]
B =
3
2
1
>>
>>
>> A*B
ans =
10
>>
>>
>>
>> B*A
ans =
3 6 9
2 4 6
1 2 3
>>
>>
原文：https://www.cnblogs.com/herd/p/13508401.html