A truncation error is the error introduced by replacing an exact mathematical operation with a finite approximation, such as replacing a derivative by a finite difference.
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Truncation error refers to the discrepancy that occurs when an infinite process is approximated by a finite one. This is a common concept in numerical analysis and computational methods, where exact solutions are often impractical to obtain analytically. ### Key Points about Truncation Error: 1. **Origin**: It arises when a mathematical procedure is truncated or simplified.