Difference between revisions of "NSolve Command"

Revision as of 13:07, 19 August 2011

This command works in CAS View only.

NSolve[ <Equation> ]: Finds a numeric solution for a given equation (or a set of equations) for the variable x.; Example:
NSolve[sin(x) = x] gives you {x = 0}.

NSolve[ <Equation>, <Variable> ]: Finds a numeric solution to an equation (or a set of equations) for a given unknown variable (or set of variables).; Example:
NSolve[a^4 + 34a^3 - 34, a] gives you {a = 0.99}.

NSolve[ <Equation>, <Variable> ]: Finds a numeric solution to an equation (or a set of equations) for a given unknown variable (or set of 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 3: / Line 3: @@
 ;NSolve[ <Equation> ]
 :Finds a numeric solution for a given equation (or a set of equations) for the variable x.
+:{{example|1=<div><code><nowiki>NSolve[sin(x) = x]</nowiki></code> gives you ''{x = 0}''.</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).
-:{{example|1=&nbsp;
+:{{example|1=<div><code><nowiki>NSolve[a^4 + 34a^3 - 34, a]</nowiki></code> gives you ''{a = 0.99}''.</div>}}
-:* <code>NSolve[sin(x) = x]</code> gives you ''{x = 0}''.
+;NSolve[ <Equation>, <Variable> ]
-:* <code>NSolve[a^4+34a^3-34, a]</code> gives you ''{a = 0.99}''.}}
+:Finds a numeric solution to an equation (or a set of equations) for a given unknown variable (or set of variables).
-{{note|See also [[Solve Command]].}}
+:{{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>
+* It is optional to give the starting point like ''{x=3, y=1.5}''.
+* See also [[Solve Command]].
+</div>}}