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28 lines
1.4 KiB
Plaintext
28 lines
1.4 KiB
Plaintext
Math::Series defines a class for simple mathematic series with a recursive
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definition such as x_(n+1) = 1 / (x_n + 1). Such a recursive definition is
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treated as a sequence whose elements will be added to form a series. You
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can refer to the previous sequence element as well as to the current index
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in the series. Creation of a Math::Series object is described below in the
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paragraph about the constructor.
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Math::Series uses Math::Symbolic to parse and modify the recursive
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sequence definitions. That means you specify the sequence as a string
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which is parsed by Math::Symbolic. Alternatively, you can pass the
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constructor a Math::Symbolic tree directly.
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Because Math::Series uses Math::Symbolic for its implementation, all
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results will be Math::Symbolic objects which may contain other variables
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than the sequence variable and the iterator variable.
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Each Math::Series object is an iterator to iterate over the elements of
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the series starting at the first element (which was specified by the
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starting element, the second argument to the new() constructor). It offers
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facilities to cache all calculated elements and access any element
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directly, though unless the element has been cached in a previous
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calculation, this is just a shortcut for repeated use of the iterator.
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Every element in the series may only access its predecessor, not the
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elements before that.
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WWW: http://search.cpan.org/dist/Math-Series
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