Step 3: Multiply the third element of row R 1 with the determinant obtained after deleting the first row and third column. Step 2: Similarly, multiply the second element of the first rowR 1, with the determinant obtained after deleting the first row and second column. Step 1: Multiply the first element a 11 of row R 1 with (-1) (1 + 1) and with the second order determinant obtained by deleting the elements of row R 1 and C 1 of A as a 11 lies in R 1 and C 1. Consider a matrix A of order 3×3įor calculating the Determinant of 3×3 Matrix use the following step: It can be expanded either along rows(R 1, R 2 or R 3) or column(C 1, C 2 or C 3). Role of Mahatma Gandhi in Freedom StruggleĪrea enclosed between two vectors in 2D Determinant of a 3×3 Matrixĭeterminant of a 3×3 Matrix is determined by expressing it in terms of 2nd-order determinants.
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