Ask Your Question

proy's profile - activity

 2020-11-16 23:51:15 +0200 received badge ● Famous Question (source) 2020-08-25 22:40:00 +0200 commented question Solutions step by step in sagemath with maxima How to integrate step by step in maxima? 2020-06-09 04:46:22 +0200 received badge ● Notable Question (source) 2018-11-23 10:02:31 +0200 received badge ● Popular Question (source) 2017-04-18 01:50:24 +0200 received badge ● Notable Question (source) 2016-08-29 12:53:03 +0200 received badge ● Nice Question (source) 2016-08-29 10:20:14 +0200 commented answer Solve trigonometric equation I agree... 2016-08-29 08:34:30 +0200 commented answer Solve trigonometric equation Pay attention to argument of cotangent: it is 2x: see here See equation solver for correct answer. 2016-08-28 23:40:30 +0200 commented answer Solve trigonometric equation It doesn't work for 2*cot(2x). More precisely, solve(2*cot(2*x)==0, x, to_poly_solve='force') returns empty list. 2016-08-28 23:36:58 +0200 received badge ● Student (source) 2016-08-28 23:23:50 +0200 asked a question Solve trigonometric equation How do I solve simple trigonometric equation 2*cot(2x)=0? I tried solve, but it gives me one solution, I need solution with n. Thank you. 2016-05-22 10:20:36 +0200 commented answer Bug in sage solve Thank you. Just strange that Sage can't solve such simple system. 2016-05-21 13:55:27 +0200 asked a question Bug in sage solve Sage raises an error when I try to solve the following: solve(a*exp(k*2) - n, a*exp(k*8)-m, a, k, solution_dict=True) What is the reason for this? 2015-12-31 05:16:28 +0200 received badge ● Popular Question (source) 2015-09-19 19:42:51 +0200 commented answer Sage and python subprocess Managed to fix it. I ran script as www-data, so chown -R www-data /root/.sage and same for /var/www/ fixed the problem. 2015-09-19 18:36:27 +0200 commented answer Sage and python subprocess Sorry, I'm newbie to this. How can I check it? I actually deployed django site and I logged in as root. 2015-09-19 17:11:30 +0200 asked a question Sage and python subprocess Just installed sage-6.8 From python program I run the following command: res = check_output(["/opt/mathenv/sage-6.8/sage","/opt/mathenv/mathsite/mathsite/scripts/eq_solver.sage","x-5", "x",'-oo', '1', 'oo', '1', '14'])  But this piece of code gives me the following error: CalledProcessError: Command '['/opt/mathenv/sage-6.8/sage', '/opt/mathenv/mathsite/mathsite/scripts/eq_solver.sage', 'x-5', 'x', '-oo', '1', 'oo', '1', '14']' returned non-zero exit status 1  It works perfectly if I enter the command directly in shell, so there are no errors with the script. I've managed to get the error: Setting permissions of DOT_SAGE directory so only you can read and write it. os.chmod(DOT_SAGE, _desired_mode)\nOSError: [Errno 1] Operation not permitted: \'/var/www/.sage/'  How can I fix it?