50g

Hello J, just press [Left] [2D/3D] remember that if you are in RPN you 
have hold [Left] and press [2D/3D]
The type of plot is highlighted, if  fast3D is not selected, press 
CHOOS in the soft menu, you can use the up and down arrows to select 
fast3D or just press and hold [ALPHA] and press [F] and then press 
[ENTER] or OK in the soft menu.
Now press the down arrow to go to EQ where you are going to enter the 
equation to plot, press the single quote mark, you will notice that the 
soft menu now have X and Y to help you enter the equation, 
enter 'X^2+Y^2' and press [ENTER] or OK in the soft menu
You are ready to plot the graphic press DRAW in the soft menu, when the 
graphic comes, play with the arrows to see the graphic in different 
positions.