2018-02-20 23:35:08 +0200 received badge ● Student (source) 2018-02-20 17:24:10 +0200 asked a question Problem solving a system of equations Hello everyone, Here I copy my code in sage. var('r2 si co r12 r22 r32 d32') eq1 = r12==r2*d32*(1-si*(co+sqrt(3*(1-co*co)))/2)/2 eq2 = r22==r2*d32*(1-si*(co-sqrt(3*(1-co*co)))/2)/2 eq3 = r32==r2*d32*(1+si*co)/2 eq1.show() eq2.show() eq3.show() solve([eq1,eq2,eq3],r2,si,co) And this is the answer that I get when I execute: Error in lines 1-1 Traceback (most recent call last): File "/cocalc/lib/python2.7/site-packages/smc_sagews/sage_server.py", line 1013, in execute exec compile(block+'\n', '', 'single') in namespace, locals File "", line 1, in File "/ext/sage/sage-8.1/local/lib/python2.7/site-packages/sage/symbolic/relation.py", line 1050, in solve sol_list = string_to_list_of_solutions(repr(s)) File "/ext/sage/sage-8.1/local/lib/python2.7/site-packages/sage/symbolic/relation.py", line 580, in string_to_list_of_solutions v = symbolic_expression_from_maxima_string(s, equals_sub=True) File "/ext/sage/sage-8.1/local/lib/python2.7/site-packages/sage/calculus/calculus.py", line 2159, in symbolic_expression_from_maxima_string raise TypeError("unable to make sense of Maxima expression '%s' in Sage"%s) TypeError: unable to make sense of Maxima expression '[if((-pi/2