Mathematica normally takes any expression it is given, and evaluates it as far as possible. But built into the Mathematica language is a collection of flexible primitives ...

As soon as you connect almost any kind of controller or input device to your computer, Mathematica will immediately let you use it to control Manipulate, 3D graphics, etc. ...

The single function Manipulate gives immediate access to a huge range of powerful interactive capabilities. For any expression with symbolic parameters, Manipulate ...

Building on Mathematica's strengths in large-scale data handling, numerical optimization, and geometric computation, Version 6.0 brought a new level of automation to data ...

Gradient is an option for FindMinimum and related functions that specifies the gradient vector to assume for the function being extremized.

HoldRest is an attribute which specifies that all but the first argument to a function are to be maintained in an unevaluated form.

PreemptProtect[expr] evaluates expr, without any interruption from preemptive evaluations.

When you enter a piece of input such as 2+2, Mathematica first recognizes the + as an operator and constructs the expression Plus[2,2], then uses the built-in rules for Plus ...

DistributionFitTest[data] tests whether data is normally distributed. DistributionFitTest[data, dist] tests whether data is distributed according to dist. ...

Invisible characters. In the input there is an invisible comma between the 1 and 2. Here there is an invisible space between the x and y, interpreted as multiplication.