
Example: Find y(1) with stepsize, h = 0.5 for:
y ′ = x – y, y(0) = 1. 
Steps 
Key Sequence 
Screens 
1. Graph Slope Field 


2. Graph Solution Curve 


3. Change the Stepsize 
Press Diamond key, then F2 key (for WINDOW) 


Press down arrow (to tstep=) 


Press 0.5, then ENTER key 

4. Graph Solution Curve 
Press DIAMOND key, then F3 key 

5. Find y(1) 
Press F3 key (for Trace) 


Press 1, then ENTER (to input t = 1) 

Note 1: The solution is at the bottom of the screen y(1) = 0.5. 
Note 2: You can also scroll to right to find y(1.5), y(2), etc.
and you can scroll to the left to find y(0.5), y(0), y(–0.5), etc. 
Note 3: You can also use the TABLE to find y(1.5), y(2),
y(0.5), y(0), y(–0.5), etc. 