Example 2 Use Cholesky's LU factorization method to solve the system 16x, – 12x, – 12x3– 16x4 = 16 %3D - -12x, + 25x, + X3 – 4x4 = – 68 -12x, + X2 + 17x3 + 14x, = - 20 -16x1 – 4x2 + 14x3 + 57x, = 158 %3D

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