#### notes

**Determinant of a matrix of order one:**

Let A = [a] be the matrix of order 1, then determinant of A is defined to be equal to a**Determinant of a matrix of order two:**

Let A =`[(a_11,a_12),(a_21,a_22)]` be a matrix of order `2 xx 2`,

then the determinant of A is defined as:

`det (A) = |A| = ∆ = |(a_11,a_12),(a_21,a_22)|` = `a_11a_22 - a_21a_12`

#### Shaalaa.com | Determinants part 2 (Matrix Order 1 ,2, 3)

##### Series 1: playing of 2

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