TraceScan[f, expr] applies f to all expressions used in the evaluation of expr. TraceScan[f, expr, form] includes only those expressions which match form. TraceScan[f, expr, ...

Uninstall[link] terminates an external program started by Install, and removes Mathematica definitions set up by it.

Unprotect[s_1, s_2, ...] removes the attribute Protected for the symbols s_i. Unprotect["form_1", "form_2", ...] unprotects all symbols whose names textually match any of the ...

Functions for manipulating elements in explicit lists. This gives a list with x prepended. This inserts x so that it becomes element number 2.

You can define the derivative in Mathematica of a function f of one argument simply by an assignment like f'[x_]=fp[x]. This defines the derivative of f(x) to be fp(x). In ...

A standard electronic calculator does all your calculations to a particular accuracy, say ten decimal digits. With Mathematica, however, you can often get exact results. ...

Mathematica usually pays no attention to whether variables like x stand for real or complex numbers. Sometimes, however, you may want to make transformations which are ...

This gives a result for the integral of x^n that is valid for almost all values of n. For the special case of x^-1, however, the correct result is different. The overall goal ...

Evaluating integrals is much more difficult than evaluating derivatives. For derivatives, there is a systematic procedure based on the chain rule that effectively allows any ...

The standard set of messages for built-in Mathematica functions are written in American English. In some versions of Mathematica, messages are also available in other ...