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The way that iMath treats this function can be influenced by function hints: | The way that iMath treats this function can be influenced by function hints: | ||
* none: No function hints. Must be used because iMath requires three arguments to the <code>FUNCTION</code> declaration. | * none: No function hints. Must be used because iMath requires three arguments to the <code>FUNCTION</code> declaration. | ||
* lib: A library function. It will not be affected by <code>[[CLEAREQUATIONS]]</code>. | * lib: A [[library function]]. It will not be affected by <code>[[CLEAREQUATIONS]]</code>. | ||
* trig: For trigonometric functions. Tells iMath that this function will get special treatment when printing (e.g. sin²''x'' instead of (sin''x'')²) . | * trig: For trigonometric functions. Tells iMath that this function will get special treatment when printing (e.g. sin²''x'' instead of (sin''x'')²) . | ||
* expand: The function is to be expanded immediately. Useful for functions that are abbreviations, e.g. <code>square(x)</code> will be expanded to <code>x^2</code> whenever it is used. | * expand: The function is to be expanded immediately. Useful for functions that are abbreviations, e.g. <code>square(x)</code> will be expanded to <code>x^2</code> whenever it is used. | ||
Revision as of 16:21, 26 March 2017
Syntax
FUNCTION { hints, symbol, symbol|exlist }
Implemented in iMath since version 2.2.0 or earlier.
Explanation
Declare a user-defined function. The second parameter is the name of the function. The the third parameter declares the arguments of the function and can be either a single symbol or a list of symbols.
The way that iMath treats this function can be influenced by function hints:
- none: No function hints. Must be used because iMath requires three arguments to the
FUNCTIONdeclaration. - lib: A library function. It will not be affected by
CLEAREQUATIONS. - trig: For trigonometric functions. Tells iMath that this function will get special treatment when printing (e.g. sin²x instead of (sinx)²) .
- expand: The function is to be expanded immediately. Useful for functions that are abbreviations, e.g.
square(x)will be expanded tox^2whenever it is used. - nobracket: The function does not require brackets around the argument (e.g.
sqrt(x)is printed as <math>root x</math>). - defdiff: Differentiate the definition of the function, not the function itself (e.g.
sin(x)will be differentiated tocos(x)and not to(sin(x))'.
Example
FUNCTION {none, f, x} declares the function f with one argument.
See also
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