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The scale data structure
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Description
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The scale data structure is used to represent asymptotic scales (see MultiSeries for a definition).
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A scale is represented as a table whose entries are:
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'list'
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The ordered list of functions in the scale;
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'variable'
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the name of the first function having entered the scale;
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'varname'
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the name of the variable given by the user;
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'back'
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the expression of this variable in terms of 'variable';
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'log'
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a table of the logarithms of the functions in the scale.
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Scales being stored as tables, they can be extended during a computation.
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Currently, only operations between multiseries expressed in the same scale are supported.
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Examples
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![scale[list]](/support/helpjp/helpview.aspx?si=6327/file02426/math86.png)
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![[_var[1/x]]](/support/helpjp/helpview.aspx?si=6327/file02426/math89.png)
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![scale[list]](/support/helpjp/helpview.aspx?si=6327/file02426/math100.png)
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![[_var[1/x], _var[1/exp(x)]]](/support/helpjp/helpview.aspx?si=6327/file02426/math103.png)
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