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Question
Mathematics
A square matrix A is called idempotent if
Q. A square matrix A is called idempotent if
2229
245
Matrices
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A
A
2
=
I
24%
B
A
2
=
O
13%
C
2
A
=
I
11%
D
A
2
=
A
52%
Solution:
A square matrix A is idempotent iff
A
2
=
A
.