Find the two scalars (in C) ?1 and ?2 so that A ? ?I issingular. For
A = [11 1 -1]
Use the fact that A ? ?I is singular iff det(A ? ?I) = 0.
For each ?i find a basis for RS(A??iI). Each basiswill consist of a single vector, verify that the two vectors youfound are orthogonal.
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