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$PreRead   (Built-in Mathematica Symbol)
$PreRead is a global variable whose value, if set, is applied to the text or box form of every input expression before it is fed to Mathematica.
Basic Plotting   (Mathematica Tutorial)
Basic plotting functions. This plots a graph of sin(x) as a function of x from 0 to 2π. You can plot functions that have singularities. Mathematica will try to choose ...
Derivatives of Unknown Functions   (Mathematica Tutorial)
Differentiating a known function gives an explicit result. Differentiating an unknown function f gives a result in terms of f'. Mathematica applies the chain rule for ...
Functions for grouping together elements of lists. Here is a list. This groups the elements of the list in pairs, throwing away the single element left at the end.
Importing Graphics and Sounds   (Mathematica Tutorial)
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 ...
Moving through Expressions   (Mathematica Tutorial)
You can use the keyboard to move the cursor forward or backward one character or one word at a time. You can also delete the character or word to the right or the left of the ...
Newlines and Tabs in Strings   (Mathematica Tutorial)
Explicit representations of newlines and tabs in strings. This prints on two lines. In InputForm there is an explicit ∖n to represent the newline.
Numeric Quantities   (Mathematica Tutorial)
Testing for numeric quantities. Pi is a symbol, so Pi+3 is not explicitly a number. It does however have a numerical value.
Specifying Types of Expression in ...   (Mathematica Tutorial)
You can tell a lot about what "type" of expression something is by looking at its head. Thus, for example, an integer has head Integer, while a list has head List. In a ...
Symbolic Calculations   (Mathematica Tutorial)
Mathematica's ability to deal with symbolic expressions, as well as numbers, allows you to use it for many kinds of mathematics. Calculus is one example. With Mathematica, ...
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