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A square matrix whose transpose equals its negative is called:
ASkew symmetric
BPlain symmetric
CPurely diagonal
DPurely scalar
Answer & Solution
Correct answer: A. Skew symmetric
1. Here the transpose flips the sign of every entry.
2. Entry ij equals minus entry ji.
3. Such a matrix is skew symmetric.
_Source: NCERT Class 12 Mathematics Part I, Chapter 3, Matrices._
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