HELP: Rearranging equation facsum



--- Pierpaolo Greco  wrote:

> I would ask if someone knows how to use "rearranging-equation" 
> commands in maxima. I have to express this result
> 
> 
> 
>                                     Ca k t
> (%o377)                         --------------
>                                             E
>                                            ---
>                                            R T
>                                 Ca k t + %E
> 
> 
> in terms of exp(-E/(R*T)), [...]

How about this? ab(x,e) = multiply e above and below by x

  ab (x, e) := if denom(e) = 1 then e 
    else expand (x*num(e)) / expand (x*denom(e));

I get ab (exp (-E/(R*T)), %o377) the same as your expected result.

Hope this helps,
Robert Dodier

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