NIntegral Command

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 definite integral of the given function f, starting at (Start x-Value, Start y-Value) and ending at (End x-Value).

Example: NIntegral(ℯ^(x), 0, 1, 2).

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.