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www.themathpage.com/aprecalc/functions.htm
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The values that x may assume are called the domain of the function. We say that those are the values for which the function is defined. In the function y = 2x + 3, ...
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dictionary.reference.com/browse/function
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the kind of action or activity proper to a person, thing, or institution; the purpose for which something is designed or exists; role. 2. any ceremonious public or ...
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perldoc.perl.org/functions/defined.html
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This function allows you to distinguish undef from other values. (A simple Boolean test will not distinguish among undef , zero, the empty string, and "0" , which ...
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php.net/manual/en/function.define.php
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Hi, Here is a trick to use constants within the heredoc notation. <?php define(' MY_CONSTANT','foo bar') $cst = 'cst'; function cst($constant){ return $constant; } ...
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www.mathworks.com/help/techdoc/ref/function.html
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The first line of a function defines the syntax with which you call it. The name you give to a function, as defined in the first line, should be the same as the name of ...
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www.w3schools.com/php/func_misc_define.asp
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The define() function defines a constant. Constants are much like variables, except for the following differences: A constant's value cannot be changed after it is ...
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www.statmethods.net/management/userfunctions.html
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Creating User-defined Functions. ... One of the great strengths of R is the user's ability to add functions. In fact, many of the functions in R are actually functions of ...
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docs.python.org/release/1.5.1p1/tut/functions.html
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4.6 Defining Functions. We can create a function that writes the Fibonacci series to an arbitrary boundary: >>> def fib(n): # write Fibonacci series up to n .
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