Hi, I am using sage 5.6 on cantor 0.3. I am working on trying to find the eigenvalues, and vectors for a damped harmonic oscillator. I am using the form using the undamped angular frequency<http://en.wikipedia.org/wiki/Angular_frequency>of the oscillator, and damping ratio.
code: 'define in variables' c,k,l,m,x,y,u,v,xdot,ydot,udot,vdot = var('c,k,l,m,x,y,u,v,xdot,ydot,udot,vdot', domain = RR) I = var('I', domain = QQ) 'undamped angular frequency' s = c/(2*sqrt(m*k)) 'damping ratio' wo=sqrt(k/m) 'first ode equations for the damping oscillator' xdot = u; ydot = v; -udot = 2*s*wo*u+(wo^2)*x; -vdot = 2*s*wo*v+(wo^2)*y; I get an error at this point: ------------------------------------------------------------ File "<ipython console>", line 1 SyntaxError: can't assign to operator (<ipython console>, line 1) ------------------------------------------------------------ File "<ipython console>", line 1 SyntaxError: can't assign to operator (<ipython console>, line 1) -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.