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MATLAB 方阵行列式的值,怎么出现了算不完的情况,方阵是19*19的符号矩阵.det(A)

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MATLAB 方阵行列式的值,怎么出现了算不完的情况,方阵是19*19的符号矩阵.det(A)
[ e11,-e11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
[ -e11,e10 + e11 + e12,-e12,0,0,0,0,0,0,0,-e10,0,0,0,0,0,0,0,0]
[0,-e12,e12 + e21 + e24,-e24,-e21,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
[0,0,-e24,e14 + e15 + e24,0,-e15,0,0,0,0,0,0,0,0,0,0,0,0,0]
[ 0,0,-e21,0,e20 + e21 + e23,-e23,-e20,0,0,0,0,0,0,0,0,0,0,0,0]
[ 0,0,0,-e15,-e23,e15 + e16 + e23,0,-e16,0,0,0,0,0,0,0,0,0,0,0]
[ 0,0,0,0,-e20,0,e19 + e20 + e22,-e22,-e19,0,0,0,0,0,0,0,0,0,0]
[ 0,0,0,0,0,-e16,-e22,e16 + e17 + e22,0,-e17,0,0,0,0,0,0,0,0,0]
[ 0,0,0,0,0,0,-e19,0,e18 + e19,-e18,0,0,0,0,0,0,0,0,0]
[0,0,0,0,0,0,0,-e17,-e18,e17 + e18,0,0,0,0,0,0,0,0,0]
[0,-e10,0,0,0,0,0,0,0,0,e10 + e9,-e9,0,0,0,0,0,0,0]
[0,0,0,0,0,0,0,0,0,0,-e9,e8 + e9,0,0,-e8,0,0,0,0]
[0,0,0,0,0,0,0,0,0,0,0,0,e6,-e6,0,0,0,0,0]
[ 0,0,0,0,0,0,0,0,0,0,0,0,-e6,e4 + e5 + e6,-e5,-e4,0,0,0]
[ 0,0,0,0,0,0,0,0,0,0,0,-e8,0,-e5,e13 + e5 + e7 + e8,0,0,-e7,0]
[ 0,0,0,0,0,0,0,0,0,0,0,0,0,-e4,0,e3 + e4,-e3,0,0]
[ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,-e3,e2 + e3,-e2,0]
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,-e7,0,-e2,e1 + e2 + e7,-e1]
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-e1,e1]
这个矩阵里面的e1、e2、e3。都是符号变量,可以在程序前加上syms e1、e2、e3。
把你的程序列出来,我给你看看
再问: 程序不能给你,我要发论文用的,分儿可以多给点,你就把问题中的这个矩阵试试就行了,矩阵就是算不完,不知道为什么??
再答: 兄弟,大矩阵数据太多,我懒的看,你弄个和你同样格式的小矩阵试下,如果没问题,那就肯定大矩阵也没问题,如果仍然有问题,那绝对不是矩阵求行列式带出得问题
再问: 兄弟,谢谢了,小的真的可以,就是这个大的不行啊,也不提示错误,就是算不完,算不完啊,算不完啊,哎呀呀,,就这吧,,另辟蹊径,,,,,,,
再答: 有的时候运算量太大,也有这样的情况,我曾符号计算解一个方程,结果在服务器算了一周没结果,被老师给关掉了。后来另想了个方法才得到结果。