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Texas Instruments TI-73VSC Guidebook - Page 25

Using Ans as a Variable in an Expression

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Chapter 1: Operating the TIN73 19 ³ 1. Calculate 34 using the Ans feature. -l: 3M3b M3b M3b 2. Check your answer, if desired. 374b Using Ans as a Variable in an Expression Since Ans is a variable, you can use it in expressions just as you would any other variable. When the expression is evaluated, the TIN73 uses the value of Ans in the calculation. For more information about variables, see the next two sections in this chapter entitled, “Storing Values to a Variable” and “Recalling Variable Values.” ³ Calculate the area of a garden plot 1.7 meters by 4.2 meters. Then calculate the yield per square meter if the plot produces a total of 147 tomatoes. 1. Calculate the area. -l: 1.7M4.2b 2. Divide 147 by Ans, which was calculated in the first step. 147F-¢b Ans=7.14

Section	Page
TI-73 with Graph Explorer Software	1
Important and US FCC Information	2
Table of Contents	3
Chapter 1: Operating the TI-73	3
Chapter 2: Math Operations	3
Chapter 3: Fractions	3
Chapter 4: Measurement Conversions and Constant Calculations	3
Chapter 5: Lists	3
Chapter 6: Statistical Plots	4
Chapter 7: Statistical Analyses	4
Chapter 8: Tables	4
Chapter 9: Function Graphing	4
Chapter 10: Drawing	4
Chapter 11: Trigonometry	5
Chapter 12: Programming	5
Chapter 13: Communication Link and the CBL/CBR Application	5
Chapter 14: Memory Management	5
Appendix A: Function and Instruction Reference	5
Appendix B: Reference Information	6
Appendix C: Battery/Service and Warranty Information	6
Index	6
Chapter 1: Operating the Operating the TI-73	7
Preparing to Use Your TI-73	9
Installing the AAA Batteries Installing the AAA Batteries	9
Turning the TI-73 On and Off	9
Adjusting the Display Contrast Adjusting the Display Contrast	10
Resetting Memory and All Defaults Resetting Memory and All Defaults	10
The Home Screen	11
Entering Numbers and Other Characters	12
Entering a Negative Number Entering a Negative Number	12
Entering a Number in Scientific Notation	13
Entering Secondary Functions	13
Entering Text	13
Common Display Cursors	16
Editing Numbers and Characters	17
Functions and Instructions	18
Accessing Functions and Instructions from Menus	18
Accessing Functions	20
Instructions from the CATALOG	20
Entering Expressions	21
Grouping Parts of Expressions with Parentheses	22
Using Implied Multiplication in Expressions	22
Entering Multiple Expressions on One Line	22
Retrieving Previous Entries	23
Recalling and Storing the Last Answer	24
Continuing a Calculation with Ans	24
Using Ans as a Variable in an Expression	25
Storing Values to a Variable	26
Recalling Variable Values	27
Mode Settings	28
Numeric Notation Mode	29
Decimal Notation Mode	30
Angle Mode	30
Display Format Mode	30
Simplification Mode	30
Chapter 2: Math Operations	31
Keyboard Math Operations	33
Basic Operations	33
Integer Division	34
Percent	35
Inverse Function	36
Square	36
Power	37
Square Root	37
Test Operations	38
The [MATH] MATH Menu	40
lcm(	41
gcd(	42
x^3 (cube)	43
x^1/3 (cube root)	44
xth root	44
Solver	44
The [MATH] NUM Menu	50
abs(	50
round(	51
iPart( and fPart(	52
min( and max(	53
remainder(	54
The [MATH] PRB Menu	55
rand	55
randInt(	56
nPr	57
nCr	57
! (Factorial)	58
coin(	59
dice(	59
The [MATH] LOG Menu	60
log(	60
10^(	61
ln(	61
e^(	62
Chapter 3: Fractions	63
Entering Fractions	64
Using Fractions in Calculations	65
Fraction Modes	66
Display Format Mode Settings	66
Simplification Mode Settings	66
Autosimp Setting	67
Mansimp Setting	68
Converting Between Fractions and Decimals	70
Converting Between Mixed Numbers and Simple Fractions	71
Chapter 4: Measurement, Conversions, and Constant Calculations	73
The [2nd] [CONVERT] CONVERSIONS Menu	74
Length	74
Area	74
Volume [	75
Time [	75
Temp (Temperature)	75
Mass/Weight [	75
Speed [	75
Converting a Unit of Measure	76
Constants	77
Single Mode Single Mode	78
Multiple Mode Multiple Mode	81
Chapter 5: Lists	83
Steps for Creating a List	84
The List Editor	85
Naming a List	85
Entering List Elements	87
Editing Lists in the List Editor	93
Inserting or Deleting a New List	93
Deleting Lists from Calculator Memory	94
Inserting or Deleting One Element in a List	95
Editing an Existing Element	95
Clearing All Elements in a List	96
Clearing All Elements in All Lists	96
Editing a List Formula	96
The [2nd] [STAT] Ls Menu	97
The [2nd] [STAT] OPS Menu	98
SortA( and SortD(	99
ClrList	101
dim(	101
Delta List(	103
Select(	104
seq(	105
augment(	106
L (List Signifier)	107
List Commands from the Home Screen	108
Creating a List Creating a List	108
Copying One List to Another Copying One List to Another	109
Displaying One List Element Displaying One List Element	109
Inserting or Changing a List Element Inserting or Changing a List Element	110
Using Math Functions with Lists Using Math Functions with Lists	111
Chapter 6: Statistical Plots	113
Steps for Defining a Stat Plot	114
Defining Statistical Data in Lists	115
Deselecting Yn Functions	115
Defining a Stat Plot	115
Selecting Stat Plot Types	117
Defining Stat Plot Options	118
Adjusting Window Values and Format	120
Displaying the Stat Plot	120
Stat Plot Examples	120
Scatter Plot and xyLine Plot	120
Pictograph	123
Bar Graph	124
Pie Chart	126
Histogram	127
Box Plot	129
Modified Box Plot	130
Chapter 7: Statistical Analyses	133
The [2nd] [STAT] MATH Menu	134
min( and max(	134
mean(, median(, and mode	136
stdDev(	137
sum(	138
The [2nd] [STAT] CALC Menu	139
Using Frequency Lists with CALC Menu Items	139
1-Var Stats and 2-Var Stats	140
Manual-Fit	144
Med-Med	146
LinReg(ax+b)	148
QuadReg	150
ExpReg	152
Chapter 8: Tables	155
What Is a Table?	156
Steps for Creating a Table	157
Defining and Selecting Functions in the Y= Editor	158
Setting Up the Table	159
Displaying the Table	160
Indpnt=Auto and Depend=Auto	161
Indpnt=Auto and Depend=Ask	162
Indpnt=Ask	163
Editing Yn from the Table Screen	166
Table Setup from the Home Screen	167
Chapter 9: Function Graphing	169
Steps for Graphing a Function	170
Example of Function Graphing	171
Defining Functions in the Y= Editor	173
Entering Functions	173
Editing Functions	174
Selecting Functions	174
Exiting the Y= Editor	175
Selecting a Graph Style	175
Setting the Window Format	177
Defining Window Values	179
The Window Values Screen	180
Determining Window Values for a Specific Graph	181
Displaying a Graph	183
Smart Graph	184
Exploring the Graph with the Free-Moving Cursor	184
Exploring a Function Graph with [TRACE]	184
Controlling the Increments of a Trace	185
Adjusting Window Values with the ZOOM Menu	187
ZBox	188
Zoom In and Zoom Out	189
ZStandard	190
ZInteger	190
Other Zoom Operations	191
The [ZOOM] MEMORY Menu	191
ZPrevious	191
SetFactors	192
Chapter 10: Drawing	193
The [DRAW] DRAW Menu	194
ClrDraw	195
Line(	195
Horizontal and Vertical	197
Shade(	199
Circle(	201
Text(	203
Pen	205
The [DRAW] POINTS Menu	207
Pt-On(, Pt-Off(, and Pt-Change(	208
Pxl-On(, Pxl-Off(, and Pxl-Change	211
pxl-Test(	212
The [DRAW] STO Menu	212
StorePic	213
RecallPic	214
Deleting a Graph Picture	214
Chapter 11: Trigonometry	215
The [2nd] [TRIG] TRIG Menu	216
Trig Functions	216
Inverse Trig Functions	217
Angle Mode Settings	217
Graphing Trig Functions	220
The [2nd] [TRIG] ANGLE Menu	221
Using ° and r to Specify Degrees and Radians	222
Converting between Degrees and Radians	223
Entering Angles in DMS Notation	224
>DMS	226
Chapter 12: Programming	227
What Is a Program?	229
Steps for Creating a Program	229
Creating and Naming a New Program	230
Create New	230
The Program Editor	231
Entering Program Commands	232
The [PRGM] CTL Menu	233
If	235
If-Then	235
If-Then-Else	236
For(	237
While	238
Repeat	238
End	239
Pause	239
Lbl and Goto	240
IS>(	241
DS<(	241
Menu(	242
SetMenu(	243
prgm	244
Return	245
Stop	245
DelVar	246
GraphStyle(	246
The [PRGM] I/O Menu	247
Input	248
Prompt	250
Disp	250
DispGraph	251
DispTable	251
Output(	251
getKey	252
ClrScreen and ClrTable	253
GetCalc(	253
Get( and Send(	253
Editing Program Commands	254
Inserting, Deleting, and Editing Command Lines	255
Copying and Renaming a Program	255
Calling a Program from Another Program	256
Executing a Program	257
Breaking Out of a Program	258
Debugging a Program	258
Chapter 13: Communication Link and the CBL/ CBR Application	259
TI-73 Link Capabilities	260
Linking to Another Calculator	260
Linking to the CBL 2/CBL System or CBR	261
The Link SEND Menu	261
The Link RECEIVE Menu	263
Transmitting Data Items	264
Repeating a Transmission to an Additional TI-73	265
DuplicateName Menu	265
Transmission Error Conditions	266
Backing Up Memory	267
Upgrading your TI-73 Graph Explorer Software	268
Graph Explorer Software Upgrades	268
Where to Get Upgrades	268
How to Install Upgrades	268
Backing Up Your Unit before an Installation	269
The APPLICATIONS Menu	269
Steps for Running the CBL/CBR Application	270
Selecting the CBL/CBR Application	271
Specifying the Data Collection Method	271
Specifiying Data Collection Options	272
GAUGE	272
DATA LOGGER	275
RANGER	278
Collecting the Data	279
Stopping Data Collection	280
Chapter 14: Memory Management	281
The [2nd] [MEM] MEMORY Menu	282
About	282
Check RAM	283
Check APPs	283
Delete	284
Clear Home	285
ClrAllLists	286
Reset	286
Appendix A: Function and Instruction Reference	289
A	289
B	290
C	291
D	292
E	294
F	295
G	296
H, I	297
L	300
M	301
N	304
O, P	305
Q, R	308
S	309
T	313
V	314
W, X	315
Z	316
Appendix B: Reference Information	325
The TI-73 Menu Map	326
The VARS Menu	335
Equation Operating System (EOS™)	336
In Case of Difficulty	337
Correcting an Error	338
Error Messages	338
Appendix C: Battery/Service and Warranty Information	345
Battery Information	346
When to Replace Batteries	346
Effects of Replacing the Batteries	346
Replacing the Batteries	347
Battery Precautions	347
Suport & Service Information	348
Product Support	348
Product Service	348
Other TI Products and Services	348
Warranty Information	349
Customers in the U.S. and Canada Only	349
Australia & New Zealand Customers only	350
All Customers outside the U.S. and Canada	350
Index	351
A, B	351
C, D	352
E	353
F, G	354
H, I, L	355
M	356
N, O, P	357
Q, R	358
S	359
T, U	360
V, W, X, Y, Z	361
TI-73 Calculator	363
Line Drawing	363