TI-85 Program:  RECTANGL

This program will approximate the area of the region
bounded by the x-axis, the curve y = f(x), x = a, and
x = b using n rectangles.  You can do a left-hand sum,
right-hand sum or midpoint sum.  You can view the 
results both graphically and numerically.

1. Before you run the program, store f(x) in y1 and set
   the desired graph window.
2. Run the program, respond yes to question if you did
   step 1, otherwise no and do step 1.
3. Work your way across the menu items, set the bounds 
   (Bnds), set the number of rectangles (N), set the 
   type of sum (R) and find the sum (CONT).
4. Program will display the curve and the rectangles.  
   You can toggle between the sum and the graph.

Return will allow you to go back to the previous menu, 
Exit will quit the program.

Note:  The INTEGRAT program calls this program.

Last updated: 2/9/98