Lockup Calculating Arc Length of Ellipse
10-17-2014, 04:16 AM
Post: #5
 Helge Gabert Senior Member Posts: 467 Joined: Dec 2013
RE: Lockup Calculating Arc Length of Ellipse
On the physical Prime, if one simplifies the integrand first with simplify(),

then int(sqrt(3*sin(x)^2+1),x,0,pi*2) does at least not hang the calculator (if that is any consolation) - - but it doesn't give an exact solution, either, rather an unnecessarily complicated integral of sqrt(-3/4*cos(2*x)+i*sin(2*x))+ ... with an info message "searching int of sqrt(...) where x is on the unit circle, using residues . . . sign error vector [<1,1>]". ?
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 Messages In This Thread Lockup Calculating Arc Length of Ellipse - mkspence - 10-16-2014, 07:24 PM RE: Lockup Calculating Arc Length of Ellipse - Tim Wessman - 10-16-2014, 07:41 PM RE: Lockup Calculating Arc Length of Ellipse - Mark Hardman - 10-16-2014, 07:59 PM RE: Lockup Calculating Arc Length of Ellipse - parisse - 10-16-2014, 08:08 PM RE: Lockup Calculating Arc Length of Ellipse - Helge Gabert - 10-17-2014 04:16 AM RE: Lockup Calculating Arc Length of Ellipse - mkspence - 10-17-2014, 05:07 AM RE: Lockup Calculating Arc Length of Ellipse - Helge Gabert - 10-17-2014, 03:00 PM RE: Lockup Calculating Arc Length of Ellipse - Wes Loewer - 10-20-2014, 08:10 AM RE: Lockup Calculating Arc Length of Ellipse - Helge Gabert - 10-20-2014, 02:20 PM RE: Lockup Calculating Arc Length of Ellipse - parisse - 10-20-2014, 06:04 PM RE: Lockup Calculating Arc Length of Ellipse - Helge Gabert - 10-20-2014, 09:44 PM RE: Lockup Calculating Arc Length of Ellipse - peacecalc - 10-21-2014, 05:07 PM

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