Applications 17–9
82501F~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:49 PM Printed: 10/27/05 3:04
PM Page 9 of 20
This program graphs the function A sin(BX) with random
integer coefficients between 1 and 10. Try to guess the
coefficients and graph your guess as C sin(DX). The program
continues until your guess is correct.
PROGRAM:GUESS
:PlotsOff :Func
:FnOff :Radian
:ClrHome
:"Asin(BX)"!
!!
!Y1
:"Csin(DX)"!
!!
!Y2
Define equations.
:GraphStyle(1,1)
:GraphStyle(2,5)
Set line and
ath
ra
h
styles.
:FnOff 2
:randInt(1,10)!
!!
!A
:randInt(1,10)!
!!
!B
:0!
!!
!C:0!
!!
!D
Initialize coefficients.
:L2p!
!!
!Xmin
:2p!
!!
!Xmax
:pà 2!
!!
!Xscl
:L10!
!!
!Ymin
:10!
!!
!Ymax
:1!
!!
!Yscl
Set viewing window.
:DispGraph
:Pause
Display graph.
:FnOn 2
:Lbl Z
:Prompt C,D Prompt for guess.
:DispGraph
:Pause
Display graph.
:If C=A
:Text(1,1,"C IS OK")
:If CÆ’A
:Text(1,1,"C IS WRONG")
:If D=B
:Text(1,50,"D IS OK")
:If DÆ’B
:Text(1,50,"D IS WRONG")
Display results.
:DispGraph
:Pause
Display graph.
:If C=A and D=B
:Stop
:Goto Z
Quit if guesses are correct.
Using a Program to Guess the Coefficients
Setting Up the
Program
Program
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