Question

a rule of expanding a determinant of order 3
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Answer 1

Answer:

Determinant of a matrix of order three can be determined by expressing it in terms of second order determinants. This is known as expansion of a determinant along a row or a column. There are 6 ways of expanding a determinant of order 3 corresponding to each of 3 rows (R1, R2 and R3) and 3 columns (C1, C2 and C3).