NIntegral Command
From GeoGebra Manual
- NIntegral( <Function>, <Start x-Value>, <End x-Value> )
- Computes (numerically) the definite integral \int_a^bf(x)\mathrm{d}x of the given function f, from a (Start x-Value) to b (End x-Value).
- Example:
NIntegral(ℯ^(-x^2), 0, 1)yields 0.75.
- NIntegral( <Function>, <Start x-Value>, <Start y-Value>, <End x-Value> )
- Computes (numerically) the indefinite integral of the given function, and plots the graph of that function through (Start x-Value, Start y-Value), with end point at (End x-Value).
- Example:
NIntegral(sin(x)/x, π, 1, 2π)plots the graph of the indefinite integral y=F(x)+c of the given function in the interval [π, 2π]. The value of c is defined by the initial condition (start x-Value, start y-Value)=(π, 1).
Hint: In the 
CAS View the following syntax can also be used:
- NIntegral( <Function>, <Variable>, <Start Value>, <End Value> )
- Computes (numerically) the definite integral \int_a^bf(t)\mathrm{d}x of the given function f, from a (Start value) to b (End value), with respect to the given variable.
- Example:
NIntegral(ℯ^(-a^2), a, 0, 1)yields 0.75.
