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In the matrix of a symmetric relation, what is true about entries outside the main diagonal?

Answer and explanation

Correct answer: They are equal across the main diagonal

Step 1: In a relation matrix, (m_{ij}=1) means ((a_i,a_j)\in R). Step 2: Symmetry requires ((a_j,a_i)), so (m_{ji}=1). Step 3: Therefore, the matrix of a symmetric relation is a symmetric matrix.

Related tags

Matrix PropertySymmetric MatrixClass 12Symmetric RelationRelations And FunctionsMathematicsClass 12 Mcq

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