[Maxima] request for help getting maxima to plot the like i would want

Jelle de Jong jelledejong at powercraft.nl
Fri Feb 8 06:30:56 CST 2008

```Mario Rodriguez wrote:
> Jelle de Jong escribió:
>> Hello everybody,
>>
>> I have been using and developing linux for 3 years and am an experienced
>> user. I am following some basic mathematical classes on my university.
>> In this collage I have to use software to calculate and analyze
>> functions. The software that is used is called Derive:
>> http://en.wikipedia.org/wiki/Derive_computer_algebra_system
>>
>> For a real FLOSS user this is not an option, so I went trying out all
>> the mathematical tools for GNU/Linux. I think maxima is the program that
>> should be able to do all the calculations and visualisations on the
>> functions I use. However after spending a day working and trying I cant
>> get my functions to plot the way I want and to calculate on them
>> (differentiations / Integration / Compare / Solve).
>>
>> I tried to do somethings but its not working out very well.
>>
>> Would somebody be willing to help me out, and demonstrate the command
>> required to be able to plot in almost exactly the same way as the 2
>> example pages with the plots, that I included as attachment. (see this
>>
>
> Hello,
>
> You can try this code with Maxima 5.14:
>
>
> draw3d(implicit(z=-x-y+5, x,0,5, y,0,5, z,0,5))\$
>
> draw3d(surface_hide = true,
>       implicit(z=9-x^2-y^2, x,-4,4, y,-4,4, z,0,10))\$
>
> /*
> Define the parametric curve:
> x=t,
> y=2,
> z=5-t^2
> */
> draw3d(parametric(t,2,5-t^2, t,-5,5))\$
>
>

Hi Mario,

Thank you for your help, I compiled the latest maxima and have been

However I am still unable to get an X-ax and Y-Ax in the middle:

Y
|
|
----------- X
|
|

I have been trying the following input, however I cant get it right.

I got a function that I substitute with an other function creating a new
function that I want to plot. I think I really need a good document with
examples how to port math that you do with your hands and head to
something I can enter in maxima.

function: z=y-x^2;
function, z=4;
solve(%,y);
plot2d(%,[x,-10,10]);