On Nov 19, 2008, at 2:19 PM, Jason Grout wrote: > > Jason Grout wrote: >> Scott Walck wrote: >>> The sage command >>> >>> plot(2*cos) >>> >>> produces a plot of 2*sin(x). This seems like a bug. This occurs in >>> sage 3.1.4 and on the web version. >>> >>> Note that >>> >>> plot(2*cos(x)) >>> >>> works properly. Also, >>> >>> plot(2*sin) >>> >>> appears to give the correct plot. >> > > > Line 6860 of calculus.py defines the fast_float function for cos(x) to > be math.sin. That's the problem. I'm posting a patch right now.
Why are we using math.sin/math.cos at all? Really, it should use the native C sin and cos. - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
