Difference between revisions of "NSolve Command"
From GeoGebra Manual
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{{command|CAS}} | {{command|CAS}} | ||
;NSolve[ <Equation> ] | ;NSolve[ <Equation> ] | ||
| − | :Finds a numeric solution for a given equation for the variable | + | :Finds a numeric solution for a given equation for the main variable. |
:{{example|1=<div><code><nowiki>NSolve[cos(x) = x]</nowiki></code> yields ''{x = 0.7390851332151606}''.</div>}} | :{{example|1=<div><code><nowiki>NSolve[cos(x) = x]</nowiki></code> yields ''{x = 0.7390851332151606}''.</div>}} | ||
;NSolve[ <Equation>, <Variable> ] | ;NSolve[ <Equation>, <Variable> ] | ||
| − | :Finds a numeric solution to an equation for | + | :Finds a numeric solution to an equation for the given unknown variable. |
:{{example|1=<div><code><nowiki>NSolve[a^4 + 34a^3 - 34, a]</nowiki></code> yields '' {a = 0.9904738886662206}''.</div>}} | :{{example|1=<div><code><nowiki>NSolve[a^4 + 34a^3 - 34, a]</nowiki></code> yields '' {a = 0.9904738886662206}''.</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 | + | :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}''.}} | ||
Revision as of 14:41, 21 October 2011
This command works in CAS View only.
- 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 = 0.9904738886662206}.
- 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:
- π is obtaind by pressing Alt + p.
- See also Solve Command and NSolutions Command.
