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Published byLucas Atkinson Modified over 6 years ago

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Definition: An Identity Matrix is a square matrix that, when multiplied by another matrix, equals the same matrix. Form: In the Identity Matrix the entries on the diagonal are 1 and the other entries are 0.

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WWhen using a 2x2 matrix the identity matrix is WWhen using a 3x3 matrix the identity matrix is

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IIf, find I so that WWhat are the dimensions of N? SSo what is I?

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Definition: the matrix by which another matrix is multiplied that results in the identity matrix Form:

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A matrix will have an inverse if and only if

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Find the inverse of M.

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If, find

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