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论坛 数据科学与人工智能 数据分析与数据科学 MATLAB等数学软件专版
1870 5
2010-12-15
有哪位会使用matlab软件的高手们,帮帮忙啊,就是计算矩阵之间的乘法,具体求助有关矩阵X乘以(1-X)的逆矩阵的运算,matlab里是不是不能运算有小数点的逆矩阵啊 我运行时怎么老出错误啊,提示出“Matrix must be square”,望各位再帮帮忙啊
X=[0,0,0.12,0.12,0,0,0.18,0.12,0.12,0,0.06,0,0,0,0,0.06,0.06
       0,0,0.12,0.06,0,0,0,0,0,0,0,0,0,0,0,0,0
       0,0,0,0.18,0.12,0,0,0,0,0.06,0,0,0,0,0,0,0
       0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
       0,0,0.12,0,0,0,0,0,0,0.06,0,0,0,0,0,0,0
       0,0,0.12,0.18,0,0,0,0,0,0,0,0,0,0,0,0,0
       0,0,0.06,0.12,0,0,0.12,0.06,0,0,0,0,0,0,0,0.06,0.06
       0,0,0.06,0.06,0,0,0.12,0,0.12,0,0,0,0,0,0,0.06,0.06
       0,0,0.06,0.12,0,0,0,0,0,0,0,0,0,0,0,0.06,0.12
       0,0.18,0.12,0,0,0,0,0,0,0,0.12,0,0,0.06,0,0,0
       0,0.06,0.12,0,0,0,0,0,0,0.06,0,0.06,0,0,0.06,0,0
       0,0.12,0.06,0,0,0,0,0,0,0.06,0.18,0,0,0.06,0.06,0,0
       0,0.18,0,0,0,0,0,0,0,0.06,0.12,0,0,0,0,0,0.06
       0,0.12,0.06,0,0,0,0,0,0,0,0.12,0,0,0,0,0,0.06
       0,0,0,0,0,0,0,0,0,0.06,0.06,0,0.12,0.12,0,0,0.12
       0,0,0,0,0,0,0,0,0,0.06,0.12,0,0,0,0,0,0.12
       0,0.06,0,0,0,0,0,0,0,0.12,0.06,0,0.06,0,0,0,0]
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2010-12-15 16:19:43
X是个什么矩阵你没说呀,没法写呀 1# yangjinglove201
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2010-12-15 16:25:19
首先让matlab告诉你这个X的维度
比方:
[m,n]=size(X);
在知道X的行列数(m,n)后,
定义一个单位阵,和X有相同的维度

因为有inverse matrix,其实说明
m=n啦

最后
X * inverse(I-X)
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2010-12-15 16:26:16
X * inv ( I - X )
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2010-12-15 16:26:19
2# nkzxl
是一个一般的矩阵比较大  是17阶的一个矩阵 需要矩阵告诉你才能计算吗 因为我不太懂这个 所以也不知道怎么办
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2010-12-16 09:14:18
3# 海桐浪迹
方便QQ联系吗?我的QQ:542716952,有空的话加我,帮我算算这个矩阵啊
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