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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