Hi Regine,
It would help to know what software you are using for your plot?
For the second picture I used Maxima in stack.
Ok, I think it is not necessary, but I can add it:
The contribution margin is 1.2 monetary units/ units for a first product and 0.9 MU / units for the second product. What is the optimal production schedule for the following constraints when producing from A x ME and B y ME?
On the picture the restrictions (ie the straight lines) can be read off.
In Maxima you type in for example:
u(k,x1,y1):=-k*x+y<=-k*x1+y1;
load(simplex); u1:x>=0;
u2:y>=0;
u3:y<=5;
u4:u(-1/2,2,5);
u5:u(-3,6,3);
NB:[u1,u2,u3,u4,u5];
DB:1.2*x+0.9*y;
maximize_lp(DB,NB);
which solves the optimization problem (DB=9.9, y=3, x=6)
I hope this helps!
Ps: I don't want to know the answer of the optimal production schedule, because in stack the package "simplex" isn't currently supported. I only want to know how to color the area below the constraints
Hi Regine,
Just discovered that both of my Moodle's that have STACK on them, that the STACK install is broken. Right now I just don't have time to fix them. Maybe this link, https://people.richland.edu/james/spring15/m122/projects/draw.html will help you some.
I am so sorry. Maybe someone else can help with an answer.
Ok, good luck!
I hope so, too!
Thanks for the link, but the draw-package isn't supported until yet.
Hi Regine;
The image of your screenshot seems to be created in Geogebra, wich is a mathematical tool with a very strong graphic interface. In geogebra you can define several points with different parametres and constraints and later use them to create a function or even a form derived of some fixed points and other movible. There is actually a geogebra question type for moodle, so you could create a randomly generated question using que geogebra built-in maths assesment.
Gretings
Hi Eduardo
Thanks for your answer. But I an cannot find a possibility to integrate GeoGebra in the moodle of our university.
Can you create a screenshot for me to show how it works?
Greetings!
Hi Regine,
it seems that the GeoGebra question type is only supported up to Moodle 3.3. and I have actually had problems with some versions of these questions running not stable.
The best would probably be if you integrate a geogebra applet via Java Script into a STACK question. You can have a look at this older discussion on this topic. Or you are using JSX Graph - but I myself are still at the very beginning with both solutions.
Stephan.
