Matrices
NCERT Exemplar Class 12
CBSE
Grade 12
Question:
For any square matrix $A$, $A + A'$ is always a:
(a) Symmetric matrix
(b) Skew-symmetric matrix
(c) Diagonal matrix
(d) Scalar matrix
Step-by-Step Solution
(A + A')' = A' + (A')' = A' + A = A + A'. [1.0 Mark]
---
🎯 Official CBSE Marking Scheme:
Selecting Symmetric matrix: 1.0 Mark
Correct Answer: Symmetric matrix
Confused by the solution? Ask the AI to explain a specific step, tell you where you went wrong, or break down the key trap in this question.