CHAPTER 4 Calculator Notes for the TI-89, TI-92 Plus, and Voyage ...

Note 4E • TRANSFRM Program (continued) TI-89/TI-92 Plus/Voyage 200
transfrm()
Prgm
© Initialize
setMode("Graph","Function")
-15.8áxmin:15.8áxmax
-7.6áymin:7.6áymax
1áyscl:1áxscl
setGraph("Grid","On")
setGraph("Axes","On")
PlotsOff
ClrDraw
DelVar a,b,h,k,x
© Set up generic functions in Y3-Y8
ClrGraph
Define y3(x)=k+(b*((x-h)/a))^2 ©parabola
Define y4(x)=k+b*√((x-h)/a) ©square root
Define y5(x)=k+b*abs((x-h)/a) ©absolute value
Define y6(x)=k+b*√(1-((x-h)/a)^2) ©Semicircle
Define y7(x)=k+b*y8((x-h)/a) © transformation of Y8
Define y8(x)=when(x≥-3,when(x≥-1,when(x≥2,when(x>3,undef,
-5+2*x),1-x),2),undef)
Style 8,"thick"
©Display
ClrIO
instructions
Disp "Choose a type of graph"
Disp "(or quit) from F1. ENTER"
Disp "when ready to type a"
Disp "formula for the graph."
Loop ©main loop
DelVar a,b,h,k,x
3áf © beginning value of f for later choices
ToolBar
Title "Types"
Item "Parabola",lbl1
Item "Above or Sq Root",lbl2
Item "Above or Abs Val",lbl3
Item "Above or Semicirc",lbl4
Item "Generic",lbl5
Item
EndTBar
"Quit",lbl6
©Set up values of F for later choices
Lbl lbl5:f+1áf
Lbl lbl4:f+1áf
(continued)
36 CHAPTER 4 Discovering Advanced Algebra Calculator Notes for the Texas Instruments TI-89, TI-92 Plus, and Voyage 200
©2004 Key Curriculum Press