Suppose that A1 and the LU factorization of A have already been determined. How many
Chapter 7, Problem 10(choose chapter or problem)
Suppose that A1 and the LU factorization of A have already been determined. How many scalar additions and multiplications are necessary to compute A1b? Compare this number with the number of operations required to solve LUx = b using Algorithm 7.2.2. Suppose that we have a number of systems to solve with the same coefficient matrix A. Is it worthwhile to compute A1? Explain. 1
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