Mathematics, 30.10.2019 22:31 marusiaturanova2004
** this problem illustrates how gaussian elimination can be unstable without pivoting. take the following matrix: a = 10−20 1 1 1 (a) compute the condition number of this matrix in matlab using the cond command. (b) compute the lu factorization of this matrix, by hand and without partial pivoting, using exact arithmetic. (c) compute the solution to ax = b with b = [1, 0]t , again with exact arithmetic. (d) now repeat the factorization and solution computation using finite-precision arithmetic. (e) what will the solution be once partial pivoting is enabled using finite-precision arithmetic?
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** this problem illustrates how gaussian elimination can be unstable without pivoting. take the foll...
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