The cofactor A_ij of element a_ij equals:
AM_ji
BM_ij
C(−1)^{i+j} M_ij
D(−1)^{ij} M_ij
Answer & Solution
Correct answer: C. (−1)^{i+j} M_ij
Cofactor includes the sign (−1)^{i+j}.
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