Question: i) Find the permutation matrix ii) Find the solution of the PA using the LU decomposition. X1 + X2+4 X3 +4 x4 = 1

i) Find the permutation matrix ii) Find the solution of the PA using the LU decomposition. X1 + X2+4 X3 +4 x4 = 1

i) Find the permutation matrix ii) Find the solution of the PA using the LU decomposition. X1 + X2+4 X3 +4 x4 = 1 -2 x1 -2 x2+ 4 x3-2 x4 = 2 2 x1 +2 x2 + X3 + X4=2 -6 xi +2 x2 + 2 x3 + 5 x4 = -4

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