On Thu, Oct 11, 2012 at 3:20 AM, Doaa El-Sakout <[email protected]> wrote: > Hi everyone, > I try to solve a system of ODE by sage as follows > > x,y,sigma,r,z,b,t=var('x,y,sigma,r,z,b,t') > sigma=10 > b=8/3 > r=10 > x= function('x',t) > y= function('y',t) > z= function('z',t) > d1=(diff(x,t)-sigma*(y-x)==0) > d2=(diff(y,t)-r*x+y+x*z==0) > d3=(diff(z,t)-x*y+b*z==0)
This makes it non-linear. Did you intend to type that? > sol=desolve_system([d1,d2,d3],[x,y,z],ics=[0,1,0],ivar=t);show(sol) > > But I got the following error > > TypeError: unable to make sense of Maxima expression > 'x(t)=ilt((?g3817-10*laplace(x(t)*z(t),t,?g3817)+1)/(?g3817^2+11*?g3817-90),?g3817,t)' > in Sage > > > > Any suggestion > Doaa > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > Visit this group at http://groups.google.com/group/sage-support?hl=en. > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support?hl=en.
