Dear user and developers,
I'm new to sympy and tried a few things out, of course I stumbled across
smth I coudln't understand.
So here is my question:
If I define an expression like
g=sqrt(a/pi)*exp(-a*x**2)
and integrate it like
integrate(g,(x,-oo,oo))
I get the expected result (1).
But if I integrate an expression like
g=sqrt(1/a/pi)*exp(-x**2/a)
and integrate it the same way I get
( a * sqrt(1/a) ) / sqrt(polar_lift(a))
I must admit I'm a little bit frightened by the polar_lift function because
I've never heard of it, but it seems to give the argument of a complex
number. Is this correct?
But then I don't understand why for
a=Symbol('a',real=True)
g=sqrt(1/a/pi)*exp(-x**2/a)
simplify(integrate(g,(x,-oo,oo)))
I still don't get 1 as a result.
Would be nice to know.
Thanks in advance.
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