
Re: A buglooking behavior during integration
Posted:
Mar 3, 2013 10:58 PM


daniel.lichtblau0@gmail.com writes:
[snip]
> Yes, it looks like this runs into some fragility in the UnitStep handling code. To work around that area I'd suggest using a Piecewise equivalent. > > In[2]:= Integrate[ > Piecewise[{{1, Sqrt[Sqrt[x^2 + y^2] + x]  .7*Sqrt[x^2 + y^2] >= 0}}, > 0], {x, Infinity, Infinity}, {y, Infinity, Infinity}] > > Out[2]= 19.6268
Or, replacing the ".7" with 7/10, you get:
15000 Pi Out[1]=  2401
Scott  Scott Hemphill hemphill@alumni.caltech.edu "This isn't flying. This is falling, with style."  Buzz Lightyear

