Ex 3.3, 7 (i) - Chapter 3 Class 12 Matrices

Last updated at July 31, 2026 by

Ex 3.3, 7 (i) - Show that the matrix A = [ ] is a symmetric matrix - Ex 3.3

 

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Ex 3.3, 7 Show that the matrix A = [■8(1&−1&5@−1&2&1@5&1&3)] is a symmetric matrix A = [■8(1&−1&5@−1&2&1@5&1&3)] A’ = [■8(𝟏&−𝟏&𝟓@−𝟏&𝟐&𝟏@𝟓&𝟏&𝟑)] ∴ A’ = A Hence, A is a symmetric matrix.

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