Difference between revisions of "NSolutions Command"
From GeoGebra Manual
| Line 7: | Line 7: | ||
;NSolutions[ <Equation>, <Variable> ] | ;NSolutions[ <Equation>, <Variable> ] | ||
:Finds numerically the list of solutions to the given equation for the given unknown variable. | :Finds numerically the list of solutions to the given equation for the given unknown variable. | ||
| − | :{{examples|1=<br><code><nowiki>NSolutions[cos(x) = x, x | + | :{{examples|1=<br><code><nowiki>NSolutions[cos(x) = x, x]</nowiki></code> yields ''{0.74}''<br><code><nowiki>NSolutions[a^4 + 34a^3 = 34, a]</nowiki></code> yields the list ''{-34, 0.99}''.<br>}} |
:{{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''.}} | ||
;NSolutions[ <Equation>, <Variable = starting value> ] | ;NSolutions[ <Equation>, <Variable = starting value> ] | ||
:Finds numerically the list of solutions to the given equation for the given unknown variable with its starting value. | :Finds numerically the list of solutions to the given equation for the given unknown variable with its starting value. | ||
| − | :{{example|1=<div><code><nowiki>NSolutions[a^4 + 34a^3 | + | :{{example|1=<div><code><nowiki>NSolutions[cos(x) = x, x = 0]</nowiki></code> yields ''{0.74}''<br><code><nowiki>NSolutions[a^4 + 34a^3 = 34, a = 3]</nowiki></code> yields the list ''{-34, 0.99}''.</div>}} |
;NSolutions[ <List of Equations>, <List of Variables> ] | ;NSolutions[ <List of Equations>, <List of Variables> ] | ||
:Finds numerically the list of solutions to the given set of equations for the given set of unknown variables. | :Finds numerically the list of solutions to the given set of equations for the given set of unknown variables. | ||
| Line 17: | Line 17: | ||
:{{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}''.}} | ||
{{note| 1=<br> | {{note| 1=<br> | ||
| − | + | * The number of decimals depends on the choosen in [[Options Menu#Rounding|global rounding]]. | |
| − | + | * π is obtaind by pressing {{KeyCode|Alt + p}}. | |
| + | * See also [[Solutions Command]] and [[NSolve Command]]. | ||
}} | }} | ||
Revision as of 11:35, 21 December 2012
CAS Syntax
- NSolutions[ <Equation> ]
- Finds a numeric solution for the given equation for the main variable.
- Example:
NSolutions[cos(x) = x]yields {0.74} or {0.739085133215165} (the number of decimals depends on the choosen in global rounding)
- NSolutions[ <Equation>, <Variable> ]
- Finds numerically the list of solutions to the given equation for the given unknown variable.
- Examples:
NSolutions[cos(x) = x, x]yields {0.74}NSolutions[a^4 + 34a^3 = 34, a]yields the list {-34, 0.99}.
- Note: It is optional to give the starting point like a = 3.
- NSolutions[ <Equation>, <Variable = starting value> ]
- Finds numerically the list of solutions to the given equation for the given unknown variable with its starting value.
- Example:
NSolutions[cos(x) = x, x = 0]yields {0.74}NSolutions[a^4 + 34a^3 = 34, a = 3]yields the list {-34, 0.99}.
- NSolutions[ <List of Equations>, <List of Variables> ]
- Finds numerically the list of solutions to the given set of equations for the given set of unknown variables.
- Example:
NSolutions[{π / x = cos(x - 2y), 2 y - π = sin(x)}, {x = 3, y = 1.5}]yields the list {3.14, 1.57}
- Note: It is optional to give the starting point like {x = 3, y = 1.5}.
Note:
- The number of decimals depends on the choosen in global rounding.
- π is obtaind by pressing Alt + p.
- See also Solutions Command and NSolve Command.
