alleryEvery identity matrix is clearly also a matrix that is:
ACurved
BScalar
CSkewed
DOblong
Answer & Solution
Correct answer: B. Scalar
1. The identity has equal diagonal entries, all one.
2. Off-diagonal entries are zero.
3. So it satisfies the definition of a scalar matrix.
_Source: syllabus Mathematics Part I, Chapter 3, Matrices._
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