📐 Mathematics · Matrices · JEE

For A = [[1, 2], [3, 4]] and B = [[2, 0], [1, 3]], the trace of AB is:

Answer: 16.

Correct answer: C. 16

Explanation: AB = [[4, 6], [10, 12]], so trace = 4 + 12 = 16.

Element aij of matrix A sits at the intersection of row i and column j.

Concept context

Matrix operations, determinants, inverses, and solving linear systems