Difference between revisions of "Numeric Command"

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m (Text replace - ";(.*)\[(.*)\]" to ";$1($2)")
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<noinclude>{{Manual Page|version=5.0}}</noinclude> {{command|geogebra}}
 
<noinclude>{{Manual Page|version=5.0}}</noinclude> {{command|geogebra}}
 
==CAS Syntax==
 
==CAS Syntax==
;Numeric[ <Expression> ]
+
;Numeric( <Expression> )
 
:Tries to determine a numerical approximation of the given expression. The number of decimals depends on the global rounding you choose in the [[Options Menu]].
 
:Tries to determine a numerical approximation of the given expression. The number of decimals depends on the global rounding you choose in the [[Options Menu]].
 
:{{example|1=<div><code><nowiki>Numeric[3 / 2]</nowiki></code> yields ''1.5''.</div>}}
 
:{{example|1=<div><code><nowiki>Numeric[3 / 2]</nowiki></code> yields ''1.5''.</div>}}
  
  
;Numeric[ <Expression>, <Significant Figures> ]
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;Numeric( <Expression>, <Significant Figures> )
 
:Tries to determine a numerical approximation of the given expression, using the entered number of significant figures.
 
:Tries to determine a numerical approximation of the given expression, using the entered number of significant figures.
 
:{{example|1=<div><code><nowiki>Numeric[sin(1), 20]</nowiki></code> yields ''0.84147098480789650665''.</div>}}
 
:{{example|1=<div><code><nowiki>Numeric[sin(1), 20]</nowiki></code> yields ''0.84147098480789650665''.</div>}}

Revision as of 16:15, 7 October 2017


CAS Syntax

Numeric( <Expression> )
Tries to determine a numerical approximation of the given expression. The number of decimals depends on the global rounding you choose in the Options Menu.
Example:
Numeric[3 / 2] yields 1.5.


Numeric( <Expression>, <Significant Figures> )
Tries to determine a numerical approximation of the given expression, using the entered number of significant figures.
Example:
Numeric[sin(1), 20] yields 0.84147098480789650665.


Note: If you don't specify enough digits then you can get an apparently wrong answer due to floating point cancelation.
Example: Numeric[-500000000/785398163*sin(785398163/500000000)*1258025227.19^2+500000000/785398163*1258025227.19^2,10] will give 4096 but Numeric[-500000000/785398163*sin(785398163/500000000)*1258025227.19^2+500000000/785398163*1258025227.19^2,30] will give 0.318309886345536696694580314215.
Note: See also Mode nsolve.svg Numeric tool.
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