# Thread: how to set a range for a graph in the TI 89?

1. ## how to set a range for a graph in the TI 89?

Hi, when I write the equation of a graph in the y= editor mode, how can i set a range for it?

e.g. I want y=x from 0<x<2

then y=2x after that.. etc

I couldn't find this on the manual

Thanks

2. Originally Posted by Aquafina
Hi, when I write the equation of a graph in the y= editor mode, how can i set a range for it?

e.g. I want y=x from 0<x<2

then y=2x after that.. etc

I couldn't find this on the manual

Thanks
Search the manual for piecewise defined function.

3. i can't seem to find that?

are you sure its in the TI 89 titanium manual?

4. Originally Posted by Aquafina
i can't seem to find that?

are you sure its in the TI 89 titanium manual?
Here is an example how to put in a piecewise defined function:

$f(x)=\left\{\begin{array}{rcl}x^2&,&x<0\\-2x+4&,&x>0\end{array}\right.$

I picked the command when( from the CATALOG.