Definition:Approximation
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Definition
An approximation is an estimate of a quantity.
It is usually the case that there exists some knowledge about the accuracy of the estimate.
The notation:
- $a \approx b$
indicates that $b$ is an approximation to $a$.
Examples
$\dfrac {22} 7$ as an Approximation for Pi
$\dfrac {22} 7$ is a convenient approximation to $\pi$:
- $\dfrac {22} 7 = 3 \cdotp \dot 14285 \dot 7$
Also see
- Results about approximations can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): Entry: approximation theory
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Entry: approximation theory