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The scale data structure
Description
The scale data structure is used to represent asymptotic scales (see MultiSeries for a definition).
A scale is represented as a table whose entries are:
'list'
The ordered list of functions in the scale;
'variable'
the name of the first function having entered the scale;
'varname'
the name of the variable given by the user;
'back'
the expression of this variable in terms of 'variable';
'log'
a table of the logarithms of the functions in the scale.
The functions in the scale are represented using the global name _var with three arguments. Thus, means that the function occurs in an expansion in the variable at the point , and is the expression of the function.
Scales being stored as tables, they can be extended during a computation.
Currently, only operations between multiseries expressed in the same scale are supported.
Examples
See Also
MultiSeries
Download Help Document
means that the function occurs in an expansion in the variable 
at the point 
, and 
is the expression of the function.
