[sage-support] Re: Integration bug?

2017-10-26 Thread Robert Dodier
On 2017-10-26, david.guichard wrote: > integral(sqrt(1+cos(x)^2),x,0,pi) > > 0 The bug appears to be tickled by the Maxima package abs_integrate. Without abs_integrate, integrate(sqrt(1 + cos(x)^2), x, 0, %pi) just returns a noun expression. > Zero is decidedly

[sage-support] Integration bug?

2017-10-26 Thread david.guichard
Running sage in cocalc: integral(sqrt(1+cos(x)^2),x,0,pi) 0 Zero is decidedly not correct. The problem is apparently here: integral(sqrt(1+cos(x)^2),x) -1/24*sin(3*x) + 1/8*sin(x) -- You received this message because you are subscribed to the Google Groups "sage-support"

Re: [sage-support] Sage Crash Report

2017-10-26 Thread Dima Pasechnik
Hi, On Thursday, October 26, 2017 at 4:55:19 PM UTC+1, Renan Birck Pinheiro wrote: > > Hello, > > gfortran is installed but sage still doesn't work. I do > have libgfortran.so.4 rather than libgfortran.so.3 that sage wants. > > then your only ways out are either to build Sage from source, or to

Re: [sage-support] Sage Crash Report

2017-10-26 Thread Renan Birck Pinheiro
Hello, gfortran is installed but sage still doesn't work. I do have libgfortran.so.4 rather than libgfortran.so.3 that sage wants. Thanks, 2017-10-25 11:12 GMT-02:00 Jeroen Demeyer : > This is a known problem which will be fixed for Sage 8.1 > > For now, you have to

[sage-support] Sage Crash Report

2017-10-26 Thread Sage Ubuntu
-- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com.

Re: [sage-support] Sage Crash Report

2017-10-26 Thread Jeroen Demeyer
On 2017-10-26 10:50, Dima Pasechnik wrote: from your log: ImportError: libgfortran.so.3: cannot open shared object file: No such file or directory installing libfortran3 will fix the problem. Or waiting for Sage 8.1 since that problem has been fixed in the mean time. -- You received this

[sage-support] Sage Crash Report

2017-10-26 Thread Dima Pasechnik
from your log: ImportError: libgfortran.so.3: cannot open shared object file: No such file or directory installing libfortran3 will fix the problem. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop