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07-01-2024
Mathematics

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If matrix A has pivots at positions 5, 9, and 3 with no row exchanges, what are the pivots for the upper left 2 by 2 submatrix 2A 2(without row 3 and column 3 of A)
a) 5 and 9
b) 3 and 5
c) 9 and 3
d) 3 only

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