\START\
\COMMENT=Program file dated 06/28/93, 16:37
\NAME=TWOFN
\FILE=TWOFN.85P
Func:FnOff 
ClLCD
Radian
Disp "ENTER FIRST"
Disp "FUNCTION"

InpST "Y=",Y
\St>Eq\(Y,y1)
ClLCD
Disp "ENTER SECOND"
Disp "FUNCTION"
InpST "Y2=",Y2
\St>Eq\(Y2,y2)

ClLCD
Lbl AA
Disp "LOWER LIMIT OF X"
Prompt XL
Disp "UPPER LIMIT OF X"
Prompt XU
Disp "# INTERVALS"
Prompt N
0\->\SM
(XU-XL)/N\->\W
XL\->\xMin
XU\->\xMax
XL+(W/2)\->\X
ClLCD
Disp "SCALING GRAPH"
Disp "PLEASE WAIT"
ZFit
If yMin>0
0\->\yMin
If yMax<0
0\->\yMax
DispG
For(I,1,N)
evalF(y1,x,X)\->\YP
evalF(y2,x,X)\->\P2


SM+(YP-P2)*W\->\SM
Line(X-W/2,P2,X-W/2,YP)
Line(X-W/2,YP,X+W/2,YP)
Line(X+W/2,YP,X+W/2,P2)
Line(X+W/2,P2,X-W/2,P2)

X+W\->\X
End
Pause 
ClLCD
Disp "INTEGRAL ="
Disp SM
Disp "RUN AGAIN ?"
Disp "YES  = 1"
Disp "NO   = 2"
Input R
If R==1
Goto AA
\STOP\