NSolve 명령
GeoGebra Manual
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이 명령은 오직 CAS 창 에서만 작동합니다..
CAS Syntax
This command is only available in the CAS View.
- NSolve( <Equation> )
- Attempts (numerically) to find a solution for the equation for the main variable. For non-polynomials you should always specify a starting value (see below).
- 예:
NSolve(x^6 - 2x + 1 = 0)
yields {x = 0.51, x = 1}. - NSolve( <Equation>, <Variable> )
- Attempts (numerically) to find a solution of the equation for the given unknown variable. For non-polynomials you should always specify a starting value (see below).
- 예:
NSolve(a^4 + 34a^3 = 34, a)
yields {a = -34, a = 0.99}. - NSolve( <Equation>, <Variable = starting value> )
- Finds numerically the list of solutions to the given equation for the given unknown variable with its starting value.
- 예:
NSolve(cos(x) = x, x = 0)
yields {x = 0.74}NSolve(a^4 + 34a^3 = 34, a = 3)
yields {a = 0.99}.
- NSolve( <List of Equations>, <List of Variables> )
- Attempts (numerically) to find a solution of the set of equations for the given set of unknown variables.
- 예:
NSolve({pi / x = cos(x - 2y), 2 y - pi = sin(x)}, {x = 3, y = 1.5})
yields {x = 3.14, y = 1.57}.
노트:
- If you don't give a starting point like a=3 or {x = 3, y = 1.5} the numerical algorithm may find it hard to find a solution (and giving a starting point doesn't guarantee that a solution will be found)
- The number of decimals depends on the choosen in global rounding.
- NSolve won't work for functions that are asymptotic to the x-axis or other extreme examples. They can often be reformulated though.
- NSolve will work only if the function is continuous!
- See also Solve Command and NSolutions Command.