**Unformatted text preview: **. Hence, AB x = A ( B x ) = A = . It means that the equation AB x = has a nontrivial solution x 6 = . By the part “(a) ⇒ (b)” of Theorem 1.4.2, ( again, why this part? ) C = AB is singular. / 1...

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- Spring '08
- samiabdul
- Linear Algebra, Logic, Algebra, Matrices, nontrivial solution