Difference between revisions of "NSolve Command"

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{{command|CAS}}
 
{{command|CAS}}
 
;NSolve[ <Equation> ]
 
;NSolve[ <Equation> ]
:Finds a numeric solution for a given equation for the variable x.
+
: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 a 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 - 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 a 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}''.}}

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:
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