L-l-l-l-l-legend. expand_log works like a charm, with a bit of tweaking.
Thanks a bunch!
On Tuesday, 23 July 2013 13:01:50 UTC+10, Aaron Meurer wrote:
Sorry, but some powers automatically denest:
In [6]: print sqrt(x/2)
sqrt(2)*sqrt(x)/2
so it is impossible to pull them together.
Great. It's worth taking a read of
http://docs.sympy.org/0.7.3/tutorial/simplification.html#exponentials-and-logarithms
if you are new to this function (the bit about assumptions is
particularly important to understand).
Aaron Meurer
On Wed, Jul 24, 2013 at 6:07 AM, Ben Lucato
Say I have an expression like:
y = sqrt(2) * sqrt(-x + 4)/2
and then we call powsimp(y), we get:
sqrt(-2*x + 8)/2
is there a way to get
sqrt((-x + 4) / 2), i.e. have the denominator of the fraction be checked
too? I tried looking at the docs but there didn't seem to be a
simplification for
Sorry, but some powers automatically denest:
In [6]: print sqrt(x/2)
sqrt(2)*sqrt(x)/2
so it is impossible to pull them together.
expand_log does what you want, though it also expands using the
additive rule. It's not too much more complicated to make it work with
a multiplication of powers
