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Suppose that A, B, C, D, and E are matrices with the following sizes: A B C D E (3 x 5) (3 x 2) (5 x 1) (1 x 5) (2x3) Determine whether the matrix expression E(6B + A) is defined. Matrix is not defined. Enter the size of the resulting matrix (enter 'NA' in each box if undefined). E(6B + A) is a ( X

User RonyK
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The matrix expression E(6B + A) is not defined, and the size of the resulting matrix is NA x NA.
User Simon Pollard
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