If l is an eigenvalue and X ≠ 0 is the eigenvector
corresponding to l then
AX=lX (3.14)
Taking transposes of both sides of (3.14)
(AX)
T
= (lX)
T
=lX
T
⇒X
T
A
T
=lX
T
(3.15)
Multiplying the LH and RH members of equations
(3.15) and (3.14), ...
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