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The Maxima on-line user's manual

Algebra Calculator

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Features

-- Declaration: features Maxima recognizes certain mathematical properties of functions and variables. These are called "features".

declare (<x>, <foo>) gives the property <foo> to the function or variable <x>.

declare (<foo>, feature) declares a new feature <foo>. For example, declare ([red, green, blue], feature) declares three new features, red, green, and blue.

The predicate featurep (<x>, <foo>) returns true if <x> has the <foo> property, and false otherwise.

The infolist features is a list of known features. These are integer, noninteger, even, odd, rational, irrational, real, imaginary, complex, analytic, increasing, decreasing, oddfun, evenfun, posfun, commutative, lassociative, rassociative, symmetric, and antisymmetric, plus any user-defined features.

features is a list of mathematical features. There is also a list of non-mathematical, system-dependent features. See status.

(%o1)                                true
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