[sage-support] Re: using the value of a symbolic expression

thank you for your help, Doing print sol[0].rhs() failed on http://sagecell.sagemath.org with the message: AttributeError: 'Sequence_generic' object has no attribute 'roots' But the first method worked Le jeudi 12 décembre 2013 10:56:38 UTC+1, jean-pat a écrit : >

[sage-support] using the value of a symbolic expression

Hello, After having solved an equation, I'd like to use the result for another calculation (calculating y) or a ploting. How to convert sol into a numerical value? thank you jeanpat sol=solve(2*x+1==7,x) print sol print sol[0], type(sol), type(sol[0]) #y=2*sol+7 #print y #plot(sol,0) -- You

[sage-support] Re: equation with complex number

thank you On 9 déc, 12:52, achrzesz wrote: > On Dec 9, 12:18 pm, David Joyner wrote: > > > > > > > > > > > This is a question for sage-support, which I am ccing. > > > On Fri, Dec 9, 2011 at 5:04 AM, Jean-Patrick Pommier > > > wrote: > > > Hi, > > > Is it possible to solve equation with complex