Difference between revisions of "Solve Command"

From GeoGebra Manual
Jump to: navigation, search
(added missing result)
Line 2: Line 2:
 
{{command|CAS}}
 
{{command|CAS}}
 
;Solve[ <Equation> ]
 
;Solve[ <Equation> ]
:Solves a given equation for the variable x and returns a list of all solutions.
+
:Solves a given equation for the main variable and returns a list of all solutions.
 
:{{example|1=<div><code><nowiki>Solve[x^2 = 4x]</nowiki></code> yields ''{x = 4, x = 0}'', the solutions of ''x<sup>2</sup> = 4x''.</div>}}
 
:{{example|1=<div><code><nowiki>Solve[x^2 = 4x]</nowiki></code> yields ''{x = 4, x = 0}'', the solutions of ''x<sup>2</sup> = 4x''.</div>}}
 
;Solve[ <Equation>, <Variable> ]
 
;Solve[ <Equation>, <Variable> ]

Revision as of 11:44, 7 October 2011


This command works in CAS View only.

Solve[ <Equation> ]
Solves a given equation for the main variable and returns a list of all solutions.
Example:
Solve[x^2 = 4x] yields {x = 4, x = 0}, the solutions of x2 = 4x.
Solve[ <Equation>, <Variable> ]
Solves an equation for a given unknown variable and returns a list of all solution.
Example:
Solve[x * a^2 = 4a, a] yields \{a = \frac{4}{x}, a = 0\}, the solutions of x a2 = 4a.
Solve[ <List of Equations>, <List of Variables> ]
Solves a set of equations for a given set of unknown variables and returns a list of all solutions.
Example:
  • Solve[{x = 4 x + y , y + x = 2}, {x, y}] yields {{x = -1, y = 3}}, the sole solution of x = 4x + y and y + x = 2, and
  • Solve[{2a^2 + 5a + 3 = b, a + b = 3}, {a, b}] yields {{a = 0, b = 3}, {a = -3, b = 6}}.
Note: See also Solutions Command.
© 2021 International GeoGebra Institute