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四阶含参数矩阵求逆怎么求不出来？。
syms k K=[-k k 0 0;-k 0 k 0;0 -k 0 k;0 0 -k k]; det(K) ans =0 奇异矩阵，存在逆矩阵？
3 years ago | 0
| accepted
