Difference between revisions of "Substitute Command"
From GeoGebra Manual
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;Substitute[ <expression>, <from>, <to> ] | ;Substitute[ <expression>, <from>, <to> ] | ||
:Substitutes ''from'' in ''expression'' with ''to''. | :Substitutes ''from'' in ''expression'' with ''to''. | ||
| − | :{{example| 1=<div><code><nowiki>Substitute[(3 m - 3)^2 - (m + 3)^2, m, a]</nowiki></code> | + | :{{example| 1=<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[ <Expression>, <Substitution List> ] | ;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=<div><code><nowiki>Substitute[2x+3y-z,{x=a,y=2,z=b}]</nowiki></code> returns ''2a-b+6''.</div>}} | + | :{{example| 1=<div><code><nowiki>Substitute[2x+3y-z,{x=a,y=2,z=b}]</nowiki></code> returns ''2a - b + 6''.</div>}} |
Revision as of 12:45, 24 August 2011
This command works in CAS View only.
- Substitute[ <expression>, <from>, <to> ]
- Substitutes from in expression with to.
- Example:
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}]returns 2a - b + 6.
