Difference between revisions of "FitPoly Command"
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| − | <noinclude>{{Manual Page|version= | + | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|cas=true|statistics}} |
| − | {{command|cas=true|statistics}} | + | ;FitPoly( <List of Points>, <Degree of Polynomial> ) |
| − | ;FitPoly | ||
:Calculates the regression polynomial of degree ''n''. | :Calculates the regression polynomial of degree ''n''. | ||
| − | :{{example| 1= | + | :{{example| 1=<code><nowiki>FitPoly({(-1, -1), (0, 1), (1, 1), (2, 5)}, 3)</nowiki></code> yields ''f(x) = x<sup>3</sup> - 1 x<sup>2</sup> + 1''.}} |
| − | + | ||
| − | + | ;FitPoly( <Freehand Function>, <Degree of Polynomial> ) | |
| − | + | :Calculates the regression polynomial of degree ''n'' for a function drawn by the [[Freehand Shape Tool]]. | |
| − | + | ||
==CAS Syntax== | ==CAS Syntax== | ||
| − | ;FitPoly | + | ;FitPoly( <List of Points>, <Degree of Polynomial> ) |
:Calculates the regression polynomial of degree ''n''. | :Calculates the regression polynomial of degree ''n''. | ||
| − | :{{example| 1= | + | :{{example| 1=<code><nowiki>FitPoly({(-1, -1), (0, 1), (1, 1), (2, 5)}, 3)</nowiki></code> yields ''x<sup>3</sup> - x<sup>2</sup> + 1''.}} |
| + | |||
| + | |||
{{note| 1=<div> | {{note| 1=<div> | ||
| − | For order ''n'' there must be at least ''n + 1'' Points in the list. | + | * For order ''n'' there must be at least ''n + 1'' Points in the list. |
| − | See also [[FitExp Command]], [[FitLog Command]], [[FitPow Command]] and [[FitSin Command]]. | + | * See also [[FitExp Command]], [[FitLog Command]], [[FitPow Command]] and [[FitSin Command]]. |
| + | * If you work with big/small numbers, you should consider normalizing them for a more accurate result, see [[Normalize Command]]. | ||
</div>}} | </div>}} | ||
Latest revision as of 12:40, 4 February 2019
- FitPoly( <List of Points>, <Degree of Polynomial> )
- Calculates the regression polynomial of degree n.
- Example:
FitPoly({(-1, -1), (0, 1), (1, 1), (2, 5)}, 3)yields f(x) = x3 - 1 x2 + 1.
- FitPoly( <Freehand Function>, <Degree of Polynomial> )
- Calculates the regression polynomial of degree n for a function drawn by the Freehand Shape Tool.
CAS Syntax
- FitPoly( <List of Points>, <Degree of Polynomial> )
- Calculates the regression polynomial of degree n.
- Example:
FitPoly({(-1, -1), (0, 1), (1, 1), (2, 5)}, 3)yields x3 - x2 + 1.
Note:
- For order n there must be at least n + 1 Points in the list.
- See also FitExp Command, FitLog Command, FitPow Command and FitSin Command.
- If you work with big/small numbers, you should consider normalizing them for a more accurate result, see Normalize Command.
