combine/ln
combine logarithmic terms
Calling Sequence
Parameters
Description
Examples
combine(f, ln)
combine(f, ln, t)
combine(f, ln, t, m)
f
-
any expression
t
type
m
the name 'symbolic'
In the case combine(f, ln), expressions involving sums of logarithms are combined by applying the following transformations:
where the coefficient must be a rational constant and the argument of and must be in the region where this transformation is valid, unless 'symbolic' is specified.
In the case combine(f, ln, t), the first transformation is done if the coefficient is of type t, and the third if the coefficient -1 is of type t. Often it is useful to restrict the transformation to be done only if is an integer instead of a rational. Also, by specifying the type anything, the transformation is done in all valid cases, provided of course that the coefficient itself is not a logarithm.
See Also
additionally
assume
combine
ln
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