Question: In Exercises, solve the system Ax = b using the given factorization A = PTLU. Because PPT = I, PT LUx = b can be

In Exercises, solve the system Ax = b using the given factorization A = PTLU. Because PPT = I, PT LUx = b can be rewritten as LUx = Pb. This system can then be solved using the method of Example 3.34.
a.

0 1-1 0 o1 00 2 3 21 10 1-11-PLU, b = 1 001 0111 112 Lb 100 001 523110 310400 844

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