# NSolve Command

From GeoGebra Manual

Revision as of 14:41, 21 October 2011 by Christina.biermair (talk | contribs)

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.