Difference between revisions of "NSolve Command"
From GeoGebra Manual
| Line 1: | Line 1: | ||
| − | <noinclude>{{Manual Page|version=4.2}}</noinclude> | + | <noinclude>{{Manual Page|version=4.2}}</noinclude> |
| − | {{command| | + | {{command|geogebra}} |
;NSolve[ <Equation> ] | ;NSolve[ <Equation> ] | ||
:Finds a numeric solution for a given equation for the main variable. | :Finds a numeric solution for a given equation for the main variable. | ||
| Line 6: | Line 6: | ||
;NSolve[ <Equation>, <Variable> ] | ;NSolve[ <Equation>, <Variable> ] | ||
:Finds a numeric solution to an equation for the given unknown variable. | :Finds a numeric solution to an equation for the given unknown variable. | ||
| − | :{{example|1=<div><code><nowiki>NSolve[a^4 + 34a^3 | + | :{{example|1=<div><code><nowiki>NSolve[a^4 + 34a^3 = 34, a]</nowiki></code> yields '' {a = -34.00086498588374, a = 0.9904738885574178}''.</div>}} |
:{{note| 1=It is optional to give the starting point like ''a=3''.}} | :{{note| 1=It is optional to give the starting point like ''a=3''.}} | ||
;NSolve[ <List of Equations>, <List of Variables> ] | ;NSolve[ <List of Equations>, <List of Variables> ] | ||
:Finds a numeric solution to a set of equations for the given set of unknown variables. | :Finds a numeric solution to a set of equations for the given set of unknown variables. | ||
| − | :{{example|1=<div><code><nowiki>NSolve[{π / x = cos(x - 2y), 2 y - π = sin(x)}, {x=3, y=1.5}]</nowiki></code> yields ''{x = 3.141592651686591, y = 1.570796327746508}''.</div>}} | + | :{{example|1=<div><code><nowiki>NSolve[{π / x = cos(x - 2y), 2 y - π = sin(x)}, {x = 3, y = 1.5}]</nowiki></code> yields ''{x = 3.141592651686591, y = 1.570796327746508}''.</div>}} |
| − | :{{note| 1=It is optional to give the starting point like ''{x=3, y=1.5}''.}} | + | :{{note| 1=It is optional to give the starting point like ''{x = 3, y = 1.5}''.}} |
{{note| 1=<div> | {{note| 1=<div> | ||
| + | * The number of decimals depends on the choosen in [[Options Menu#Rounding|global rounding]]. | ||
* π is obtaind by pressing {{KeyCode|Alt + p}}. | * π is obtaind by pressing {{KeyCode|Alt + p}}. | ||
* See also [[Solve Command]] and [[NSolutions Command]]. | * See also [[Solve Command]] and [[NSolutions Command]]. | ||
</div>}} | </div>}} | ||
Revision as of 11:20, 21 December 2012
- NSolve[ <Equation> ]
- Finds a numeric solution for a given equation for the main variable.
- Example:
NSolve[cos(x) = x]yields {x = 0.7390851332151606}.
- NSolve[ <Equation>, <Variable> ]
- Finds a numeric solution to an equation for the given unknown variable.
- Example:
NSolve[a^4 + 34a^3 = 34, a]yields {a = -34.00086498588374, a = 0.9904738885574178}.
- Note: It is optional to give the starting point like a=3.
- NSolve[ <List of Equations>, <List of Variables> ]
- Finds a numeric solution to a set of equations for the given set of unknown variables.
- Example:
NSolve[{π / x = cos(x - 2y), 2 y - π = sin(x)}, {x = 3, y = 1.5}]yields {x = 3.141592651686591, y = 1.570796327746508}.
- Note: It is optional to give the starting point like {x = 3, y = 1.5}.
Note:
- The number of decimals depends on the choosen in global rounding.
- π is obtaind by pressing Alt + p.
- See also Solve Command and NSolutions Command.
