$ControlActiveSetting is a symbol whose value is True if it is evaluated while a control is active, or in certain other previewing situations.
You can enter complex numbers in Mathematica just by including the constant I, equal to Sqrt[-1]. Make sure that you type a capital I. If you are using notebooks, you can ...
Solving linear first-order ODEs is straightforward and only requires the use of a suitable integrating factor. In sharp contrast, there are a large number of methods ...
Mathematica notebooks provide a sophisticated environment for creating technical documents. But particularly if you want to merge your work with existing material in TeX, you ...
Ordering in lists. Here is a list of numbers. This gives the elements of t in sorted order.
Mathematica usually works by taking whatever input you give, and then processing it. Sometimes, however, you may want to have a program you write explicitly request more ...
If you want to make use of Mathematica output in an external file such as a program or document, you will often find it useful to "splice" the output automatically into the ...
Verbatim patterns. Here the x_ in the rule matches any expression. The Verbatim tells Mathematica that only the exact expression x_ should be matched.
int MLPutSymbol (MLINK link, const char *s) puts a symbol whose name is given by the character string s to the MathLink connection specified by link.
All the functionality in Miscellaneous`PhysicalConstants` is now available through the newly created Physical Constants Package.