Question

A is a square matrix of order 3 and |A|=7, write the value of |adjA|

Answer 1

Step-by-step explanation:

matrix order - (3×3) {square matrix}

| 7 7 7 |

| 7 7 7 |

| 7 7 7 |

here, A1 = 7,A2 = 7, A3 = 7

these numbers will not change their position

but even though it looks as same.

thus , in a square matrix the adjoint also will be same .