Difference between revisions of "Substitute Command"
From GeoGebra Manual
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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== | ||
| − | ;Substitute | + | ;Substitute( <Expression>, <from>, <to> ) |
:Substitutes ''from'' in ''expression'' with ''to''. | :Substitutes ''from'' in ''expression'' with ''to''. | ||
:{{examples| 1=<div> | :{{examples| 1=<div> | ||
:*<code><nowiki>Substitute[(x^2 / (4x + 6))^2 + 6(x^2 / (4x + 6)) + 8, x^2, a*(4x + 6)]</nowiki></code> yields ''a<sup>2</sup> + 6 a + 8''. | :*<code><nowiki>Substitute[(x^2 / (4x + 6))^2 + 6(x^2 / (4x + 6)) + 8, x^2, a*(4x + 6)]</nowiki></code> yields ''a<sup>2</sup> + 6 a + 8''. | ||
:*<code><nowiki>Substitute[(3 m - 3)^2 - (m + 3)^2, m, a]</nowiki></code> yields ''8 a<sup>2</sup> - 24 a''.</div>}} | :*<code><nowiki>Substitute[(3 m - 3)^2 - (m + 3)^2, m, a]</nowiki></code> yields ''8 a<sup>2</sup> - 24 a''.</div>}} | ||
| − | ;Substitute | + | ;Substitute( <Expression>, <Substitution List> ) |
:Substitutes in ''expression'' every variable of the list with the variable or number you choose for it. | :Substitutes in ''expression'' every variable of the list with the variable or number you choose for it. | ||
:{{example| 1=<code><nowiki>Substitute[2x + 3y - z, {x = a, y = 2, z = b}]</nowiki></code> yields ''2a - b + 6''.}} | :{{example| 1=<code><nowiki>Substitute[2x + 3y - z, {x = a, y = 2, z = b}]</nowiki></code> yields ''2a - b + 6''.}} | ||
Revision as of 17:16, 7 October 2017
CAS Syntax
- Substitute( <Expression>, <from>, <to> )
- Substitutes from in expression with to.
- Examples:
Substitute[(x^2 / (4x + 6))^2 + 6(x^2 / (4x + 6)) + 8, x^2, a*(4x + 6)]yields a2 + 6 a + 8.Substitute[(3 m - 3)^2 - (m + 3)^2, m, a]yields 8 a2 - 24 a.
- Substitute( <Expression>, <Substitution List> )
- Substitutes in expression every variable of the list with the variable or number you choose for it.
- Example:
Substitute[2x + 3y - z, {x = a, y = 2, z = b}]yields 2a - b + 6.
