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腾龙娱乐官网（hn9986.com）（微信fjm334412）
假设B={2;3;4;[2;3];[2;4];[3;4];[2;3;4]}，请问如何找到B中含有元素2的矩阵呢（2,[2;3],[2;4],[2;3;4]）。
5 years ago | 1 answer | 0
