1..10

I'm not sure if I understand what you mean, but functions whithin a restricted domain can be defined and graphed with the command Function[ <Function>, <Start x-Value>, <End x-Value> ].

Using a list you can use Min[ <List> ] and Max[<List>] to define start and end.

chris

If you want to restrict function to a finite set of points, you can define

f(x)=x^2

(1..10,f(1..10))

If you want to restrict the function to a continuous domain, please use Function command (or If command) like Chris suggested.

---------------------------------

let x=1, 2, 3, 4, 5, 6, 7, 8, 9, 10

let f(x) = an expresion in x

plot (x, f(x))

---------------------------------

1..10

list1={1,2,3,4,5,6,7,8,9,10}

rename list1 to domain

domain= {1,2,3,4,5,6,7,8,9,10}

a = Min[domain]

b=Max{domain}

function[x^2+3*x, a, b] plot f(x) with small step, but me i want step =1

10 REM basic programming of ploting a function

20 LET a = 1

30 LET b = a^2+3*a

40 PLOT a,b

50 IF a < 9 THEN a = a+1: GOTO 30

60 PRINT "the function was ploted"

:-)

Maybe you ask for something like in the 2 attachment (translate your language in language of GGB).

The paradigma of Geogebra is not procedural (like BASIC) the paradigma is functional (similar then EXCEL)

ThankYou mister rami.

Great work from You and i ThankYou for this,

My ideea is to make the computer to use litlle time with showing complex shapes.

I have smoll RAM video memmory, 1GB, and shapes with many wires and vertex slow down showing of functions ploting.

By the way, 'rami' mean in romanian slang how RAM integrated circuits have a electric board

My planning is to learn to use Geogebra for using it like a tool. For this i must to knew to use it.

I will study with carefuly there files and i will be back with comments about they.

comment: i see that this topic was clasified for romanian section. but here I wrote in 'romglish', a combination of romanian with english. :-D

my english is without english grammar and like in romanian language style. infact may english is romanian with english words and without grammar :-)