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Eigenvalues & Eigenvectors
easy
0:00.0
A matrix
A
A
A
has eigenvalues
3
3
3
and
4
4
4
. What is the trace of
A
A
A
?
A
1
1
1
B
−
1
-1
−
1
C
12
12
12
D
7
7
7
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