wrote:
> On Mar 23, 3:10 pm, Jose Guzman <n...@neurohost.org> wrote:
>
>> Dear Sage users and developers,
>>
>> I am using Sage version 3.4 running on Linux/Debian. I am still not very
>> familiar with Sage though. I tried to plot the following equation:
>>
>> sage: var('t'); # symbolic variable
>> sage: var('g'); # symbolic variable
>> sage: f(t) = g*(t**2-1)/(2*(t-1)) # try to simplify this function later...
>>
>> Obviously the function is not defined at t=1. Returns (0/0)
>>
>> sage: f(1).subs(g=9.81) # returns Division by 0
>>
>> The problem comes when I try to plot the whole function f(t). By default
>> the plot is between -1 and +1.
>>
>> sage: fig = plot(f.subs(g=9.81)) # substitute g by 9.81 , otherwise not
>> plotted
>> sage: show(fig)
>>
>
> How about:
>
> sage: fig = plot(f.subs(g=9.81), xmin=-1,xmax=1) + plot(f.subs
> (g=9.81), xmin=1, xmax=10)
>
> Actually,
>
> sage: fig = plot(f.subs(g=9.81), xmin=-1,xmax=10)
>
> seems to work, too.
>
> >
>
Hello John H Palmieri
That was it!, i had only to define a figure as combination of 2
different plot objects one from above x=1 and one bellow x=1 . Sage even
plots the small hole (0/0=indetermination) between the 2 graphics!!!
simply great.
thank you very much!
Greetings!
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