Assumptions is an option for functions such as Simplify, Refine, and Integrate that specifies default assumptions to be made about symbolic quantities.

BlockRandom[expr] evaluates expr with all pseudorandom generators localized, so that uses of SeedRandom, RandomInteger, and related functions within the evaluation of expr do ...

Mathematica provides high-performance reading and writing of binary data, to both files and pipes. A convenient symbolic format representation makes it straightforward to ...

Built into Mathematica is a uniquely flexible and concise language for creating 1D and 2D layouts—from simple tables to the most elaborate information displays and user ...

MaxStepFraction is an option to functions like NDSolve that specifies the maximum fraction of the total range to cover in a single step.

PlotRegion is an option for graphics functions that specifies what region of the final display area a plot should fill.

Here is an example of an exact ODE. This verifies the solution. Here is a contour plot of the solution.

Mathematica allows you not only to export graphics and sounds, but also to import them. With Import you can read graphics and sounds in a wide variety of formats, and bring ...

Finding lines that contain specified text. Here is a file containing some text. This returns a list of all the lines in the file containing the text is.

TetGenExpression[id] represents an instance of a TetGen object.