Difference between revisions of "NSolve Command"

Revision as of 13:10, 19 August 2011

This command works in CAS View only.

NSolve[ <Equation> ]: Finds a numeric solution for a given equation for the variable x.; Example:
NSolve[cos(x) = x] yields {x = 0.7390851332151606}.

NSolve[ <Equation>, <Variable> ]: Finds a numeric solution to an equation for a given unknown variable.; Example:
NSolve[a^4 + 34a^3 - 34, a] yields {a = 0.9904738886662206}.

NSolve[ <Equation>, <Variable> ]: Finds a numeric solution to a set of equations for a 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:

@@ Line 2: / Line 2: @@
 {{command|CAS}}
 ;NSolve[ <Equation> ]
-:Finds a numeric solution for a given equation (or a set of equations) for the variable x.
+:Finds a numeric solution for a given equation for the variable x.
 :{{example|1=<div><code><nowiki>NSolve[cos(x) = x]</nowiki></code> yields ''{x = 0.7390851332151606}''.</div>}}
 ;NSolve[ <Equation>, <Variable> ]
-:Finds a numeric solution to an equation (or a set of equations) for a given unknown variable (or set of variables).
+:Finds a numeric solution to an equation for a given unknown variable.
 :{{example|1=<div><code><nowiki>NSolve[a^4 + 34a^3 - 34, a]</nowiki></code> yields '' {a = 0.9904738886662206}''.</div>}}
 ;NSolve[ <Equation>, <Variable> ]
-:Finds a numeric solution to an equation (or a set of equations) for a given unknown variable (or set of variables).
+:Finds a numeric solution to a set of equations for a 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>}}
 {{note| 1=<div>