Question: Please help 7. (Strang 2.6.10) Consider the symmetric 4 x 4 matrix: a A = a b b b a C a 6 d (a)

Please help

7. (Strang 2.6.10) Consider the symmetric 4 x 4 matrix: a A = a b b b a C a 6 d (a) Find the LU-decomposition (factorization) of A. (b) Find the conditions on a, b, c and d such that U will have four pivots

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