Mathegoras

Vectors and matrices › Determinants › Cofactor expansion

Determinant of a 3×3 matrix

High school · ●○○○○ 10 pts

Evaluate the determinant of (21105−21−34)\begin{pmatrix}2&1&1\\0&5&-2\\1&-3&4\end{pmatrix}.

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3x3 determinant