The programs:

The quadratic function: graph, value- and signtable
Purpose: to compare the graphs of y=ax, y=ax+q, y=a(x-p), y=a(x-p)+q en y= ax+bx+c

Transformations (1) : graphs of the elementary functions y=x, y=x, y=x, y=Vx y=Vx
Examinate the influence of a parameter k with the transformations y=f(x)+k,y=f(x+k),y=k.f(x),y=f(k.x)

Transformations (2) : graphs of the same elementary functions. Examinate the influence of
the parameters k,a,b,c with the transformations y=k.f(x),y=,y=k.f(x-a),y=k.f[c(x-a)],y=k.f[c(x-a)]+b

Lines and parabolas: to determine the intersection of lines and parabolas 

Lines and circles  : to determine the intersection of lines and circles 

Graphs of functions: graphs of the general function  y=a.f[b(x-c)]+d  if 
f(x)= ax+b,ax+bx+c,a.sin[b(x-c)]+d,a.tan[b(x-c)]+d,(ax+b)/cx+d),a(x-b)(x-c)/(x+d)

Examination of functions of te third degree: calculates y,y' en y'' (expanded or factorised)
Plots the graphs of y, y' en y'', calculates roots, extrema, point of inflection and tangent

Experiments of probability: executes a test a number of times
The test is composed with 1 or more singular experiments.
A singular experiment is a random-number between given limits.
The testvalue can be the sum, the product or the value 1 or 0 of 'unequal' of the single experiments.
We can take the real value or the value thruth (1) or false if we compare the number with a

The task-editor:

For each of the 8 programs, we can solve tasks: For that, we use the 2 buttons 
'Task' and 'Editor'. The editor has a double purpose: 

If we choose 'Editor', we can edit new tasks.
We have to fill 3 fields: 'Task', 'Hint','Conclusion'
We can only have access to the 'Editor' if we know the right username.
At this moment its 'Lk28'. We can change it, by changing the textfile 'pw.txt'
If we choose 'Task' we can choose a task for the selected program.
At this moment, only a few tasks are made.
The tasks are textfiles, which we can also see with another editor.
Depending on the selected program, they get automatically the extension .OP1 , .OP2 , .... .OP8. 
    




Version 2.6       copyright Andr De Meester
Instituut Mariagaard  Oosterzelesteenweg 80   9230 Wetteren Belgi
Andre_De_Meester@yahoo.com       Comments and suggestions welcome
