a. The condition number K₂(A) really depends on the choice of the p-norm. It is, e.g., possible that K₁ (A) K∞o (A). b. When solving the linear system Ax=b with an invertible matrix AER dxd for x, the relative error in the output x is at least K₂(A) times the relative error in the input b when both errors are measured in the p-norm. c. When solving the linear system Ax=b with an invertible matrix AER dxd for x, the relative error in the output x is at most Kp(A) times the relative error in the input b when both errors are measured in the p-norm. Od. In view of Proposition 2.16, the formula holds for all p in [1,00] except p=2, and it is false for p=2. Kp (A) = || A||||A¹||p
a. The condition number K₂(A) really depends on the choice of the p-norm. It is, e.g., possible that K₁ (A) K∞o (A). b. When solving the linear system Ax=b with an invertible matrix AER dxd for x, the relative error in the output x is at least K₂(A) times the relative error in the input b when both errors are measured in the p-norm. c. When solving the linear system Ax=b with an invertible matrix AER dxd for x, the relative error in the output x is at most Kp(A) times the relative error in the input b when both errors are measured in the p-norm. Od. In view of Proposition 2.16, the formula holds for all p in [1,00] except p=2, and it is false for p=2. Kp (A) = || A||||A¹||p
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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