下面语句中正确的是().
A.(aij)m×n和行列式一样,最终都是一个数
B.(aij)n×n=|aij|n×n
C.(aij)m×n和(bij)o×p是两个相等的矩阵,当且仅当aij=bij.m=o;n=p.
D.(aij)m×n中m和n必须相等
正确答案是C
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