On 4/27/12 10:15 AM, Jose Guzman wrote:
Dear colleagues,I am trying to manipulate an expression that starts at a time = "tonset". Everything works nice until I try to plot. #define independent variable sage: t = var('t') # define parameters sage: taum, tauh = var('taum, tauh') sage: tonset=var('tonset') # normalize the equation sage: f(t) = -e^(-t/taum)*(1-e^(-t/tauh)) sage: Tmax = solve(diff(f(t),t)==0,t)[0].rhs() sage: norm_f(t) = (f(t-tonset) / f(Tmax))
Right here, aren't you shifting the plot of f to the right by tonset? norm_f(t+tonset)=f((t+tonset)-tonset)/f(Tmax)=f(t)/f(Tmax), so that norm_f(0+3)=f(0)/f(Tmax)? I think that horizontal shift may be the problem?
So do you just want norm_f(t)=f(t)/f(Tmax)? Thanks, Jason -- 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 For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
