Rule of Sarrus
Mnemonic device for calculating 3 by 3 matrix determinants
Rule of Sarrus
In matrix theory, the rule of Sarrus is a mnemonic device for computing the determinant of a 3 × 3 {\displaystyle 3\times 3} matrix named after the French mathematician Pierre Frédéric Sarrus. Consider a 3 × 3 {\displaystyle 3\times 3} matrix M = [ a b c d e f g h i...
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