If A = [[2, 1], [0, 3]] and I is the 2 × 2 identity matrix, find AI and IA and state what this shows.
Matrices
Original Khojo Papers practice question — not from a past board paper.
The transpose is [[1, 3], [2, 4]] and its order is 2 × 2.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
The transpose is obtained by writing the rows of the matrix as columns.
From the same topic and chapter, at a similar level.
If A = [[2, 1], [0, 3]] and I is the 2 × 2 identity matrix, find AI and IA and state what this shows.
Matrices
Give an example to show that matrix multiplication is not commutative.
Matrices
If A = [[3, 1], [0, 2]], find A2.
Matrices
Find the product [[1, 2], [3, 4]] × [[2, 0], [1, 3]].
Matrices
Find x and y if [[x, 3], [2, y]] = [[4, 3], [2, 5]].
Matrices
If A is of order 3 × 2 and B is of order 2 × 3, then BA is of order:
Matrices