# 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.