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Unformatted text preview: Any row or column has all elements identically zero Any two rows or columns are identical Any row or column can be expressed as linear combination of two or more rows or columns of the matrix Inverse of a matrix Given a matrix A , the inverse of that matrix is a matrix C such that: I is a identity matrix  i.e. 1s along the diagonal and 0s everywhere else C is designated as A1 Several methods for calculating inverse exist: Gauss Jordan elimination Gaussian elimination I C A = Matrix Inversion For a 2 x 2 matrix A1 = = For a 3 x 3 matrix Matrix Inversion Looking at the expressions on previous slide  it is going to be a problem if det{ A } =  A  = 0 If det{A} = 0 , then matrix A is termed singular Inverse cannot be computed . Array operation, press CTRL+SHIFT+ENTER =MMULT(B3:D5,G3:I5) Subject to roundoff error...
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 Spring '08
 Srinivasan

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