I was using sagenb,org, so the output isn't actually a SAGE session,
but pasting from sagenb.org. It says it is 4.7.2.
Glad it's fixed. I guess I ought to download a 4.8 if I'm really going
to comment in more detail, given the apparent changes.
On Jan 14, 1:47 am, Michael Orlitzky wrote:
> On 01/13/2012 07:38 PM, JamesHDavenport wrote:
>
> > Unfortunately, full_simplify has its own problems, notably with branch
> > cuts.
> > sage: f = (1/2)*log(2*t) + (1/2)*log(-t)
> > sage: f.full_simplify()
> > 1/2*log(2)
>
> In my session, I had the difference of two logarithms. In yours above,
> you've got the sum. Is that an actual sage session? I get something
> different on 4.8.alpha6:
>
> sage: f = (1/2)*log(2*t) + (1/2)*log(-t)
> sage: f.full_simplify()
> 1/2*I*pi + 1/2*log(2) + log(t)
>
> In the example below, with t=-1, both logs should have imaginary part pi
> and real parts log(2) and zero respectively?
>
> >> There's no global function for it, but what you want is to call
> >> full_simplify() on the expression.
>
> >> sage: f = (1/2)*log(2*t) - (1/2)*log(t)
> >> sage: f.full_simplify()
> >> 1/2*log(2)
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