e_1 || e_2 || ... is the logical OR function. It evaluates its arguments in order, giving True immediately if any of them are True, and False if they are all False.

Connecting to a subsidiary program via MathLink. This starts a subsidiary Mathematica process on the computer system used here. Here is a packet representing the first input ...

Within a standard interactive session, you can create "subsessions" or dialogs using the Mathematica command Dialog. Dialogs are often useful if you want to interact with ...

Introduction Methods for Local Minimization Methods for Solving Nonlinear Equations

This tutorial describes the principles behind Dynamic, DynamicModule, and related functions, and goes into detail about how they interact with each other and with the rest of ...

For most differential equations, the results given by NDSolve are quite accurate. However, because its results are based on numerical sampling and error estimates, there can ...

AccuracyGoal is an option for various numerical operations which specifies how many effective digits of accuracy should be sought in the final result.

ArcCsch[z] gives the inverse hyperbolic cosecant csch -1 (z) of the complex number z.

ArcSech[z] gives the inverse hyperbolic secant sech -1 (z) of the complex number z.

HankelH1[n, z] gives the Hankel function of the first kind H_n^(1)(z).