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How to Measure Errors
To measure the error in vectors, we need to measure the size or norm of a vector x. A popular norm is the magnitude of the largest component.
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Approximation and Errors
Similarly, the relative approximate error, denoted a, is defined as a = (x y)/x = 1 y/x. Example 5.
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Finite Difference Methods for Differential Equations
by RJ LeVeque Cited by 281 We can define the local truncation error as usual by replacing the approximate solution with the true solution, and for this simple problem where f(x) = u00
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