Unformatted text preview: A 11 C + A 12 A1 22 A1 22 A 22 ¶ = ± I n I n ¶ = I 2 n . (a) By deﬁnition and the above two equations, A is nonsingular and A1 has the form ± A1 11 C A1 22 ¶ . (b) As we stated, C =A1 11 A 12 A1 22 . / 1...
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 Spring '08
 samiabdul
 Linear Algebra, Algebra, A1

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