if A is a square matrix of order 3 and det adjA=64 find detA and det A -1HELP NEEDED URGENT
det.(adj.A) = (det.A)n-1...... here n is order of A
det.(adj.A) = (det.A)2
=> (det.A)2 = 64
=> det.A = 8 ........ ans.
det.A-1 = 1/det.A
=> det.A-1 = 1/8 ..... ans