If A^T = A, then matrix A is called a ______?
- Diagonal Matrix
- Symmetric Matrix
- Skew-Symmetric Matrix
- None of these
Explanation
A matrix A is symmetric if its transpose equals itself, i.e., A^T = A.
This means the elements are mirrored across the main diagonal.
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- 10
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- None of these
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- Commutative property w.r.t addition
- Associative property w.r.t addition
- Associative property w.r.t multiplication
- None of these
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- Whole number
- Rational number
- Irrational number
- None of these
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- Always irrational
- Always an integer
- Always rational
- None of these
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- Cubic root
- Index
- Radical
- None of these
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