Question

Se M = (mij)3x3 tal que mij = i+j, calcule detM.

Answer 1

$\left[\begin{array}{ccc}2&3&4\\3&4&5\\4&5&6\end{array}\right]$

2×4×6+3×5×4+4×3×5-3×3×6-2×5×5-4×4×4
48+60+60-54-50-64
168-168
0