The matrix A has x rows and x + 5 columns. The matrix B has y rows and 11 - y columns. Both AB and BA exist. What are the values of x and y respectively ?
8 and 3
3 and 4
3 and 8
8 and 8
A is a square matrix, then the value of adj AT - adj(A)T is equal to
A
2 I, where the identity matrix
Null matrix whose order is same as that of A
unit matrix whose order is same as that of A
If A is a square matrix, then what is adj(A - 1) - (adj A) - 1 equal to ?
2
Null matrix
Unit Matrix
None of the above
Consider the following in respect of the matrix
Which of the above is/are correct ?
1 only
2 only
bth 1 and 2
neither 1 nor 2