When you write programs in Mathematica, there are various ways to document your code. As always, by far the best thing is to write clear code, and to name the objects you ...

Return[expr] returns the value expr from a function. Return[] returns the value Null.

HeavisideTheta[x] represents the Heaviside theta function \[Theta](x), equal to 0 for x < 0 and 1 for x > 0. HeavisideTheta[x_1, x_2, ...] represents the multidimensional ...

Lists are central constructs in Mathematica, used to represent collections, arrays, sets, and sequences of all kinds. Lists can have any structure and size, and can routinely ...

There are many convenient ways to get an image into Mathematica , including drag and drop. You can also import images by evaluating commands in a notebook. Once you have an ...

Intersection[list_1, list_2, ...] gives a sorted list of the elements common to all the list_i.

DialogNotebook[{cell_1, cell_2, ...}] represents a dialog notebook that can be manipulated by the Mathematica front end.

LogicalExpand[expr] expands out logical combinations of equations, inequalities, and other functions.

Exit[] terminates a Mathematica kernel session.

While DSolve usually returns the correct solution to a differential equation it is given, it is common practice to verify the solution returned by any differential equation ...