HP 39gII - Page 317

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Programming 307

UNCHECK Unchecks the Symbolic view variable Symbn.

UNCHECK(Symbn)

Example:

UNCHECK(R1) unchecks the Polar app Symbolic view

variable R1. The result is that R1(θ) is not drawn in the Plot

view and does not appear in the Numeric view of the

Polar app.

Table of Contents

Default Chapter3
- Table of Contents3
- Manual Conventions9
- Notice10
1 Getting Started11
- On/Off, Cancel Operations11
- The Display12
- The Keyboard14
- Menu Keys14
- Shifted Keystrokes16
- Math Keys17
- Menus19
- Input Forms20
- Mode Settings20
- Setting a Mode21
- Mathematical Calculations22
- Numerical Representations29
- Complex Numbers30
- Catalogs and Editors31
2 Apps and Their Views33
- HP Apps33
- Standard App Views37
3 Function App59
- About the Function App59
  - Getting Started with the Function App59
- Function App Interactive Analysis64
4 Solve App71
- About the Solve App71
  - Getting Started with the Solve App72
- Interpreting Results76
- Multiple Solutions77
- Using Variables in Equations78
5 Statistics 1Var App81
- About the Statistics 1Var App81
  - Getting Started with the Statistics 1Var App81
  - Contents83
- Entering and Editing Statistical Data85
- Computed Statistics88
- Plotting89
6 Statistics 2Var App93
- About the Statistics 2Var App93
- Computed Statistics101
- Plotting103
7 Inference App109
- About the Inference App109
- Hypothesis Tests115
- Confidence Intervals123
8 Parametric App129
- About the Parametric App129
  - Getting Started with the Parametric App129
9 Polar App133
- About the Polar App133
  - Getting Started with the Polar App133
10 Sequence App137
- About the Sequence App137
  - Getting Started with the Sequence App137
11 Finance App141
- About the Finance App141
  - Getting Started with the Finance App141
- Cash Flow Diagrams143
- Time Value of Money (TVM)144
- Performing TVM Calculations145
- Calculating Amortizations146
12 Linear Solver App149
- About the Linear Solver App149
  - Getting Started with the Linear Solver App149
13 Triangle Solver App153
- About the Triangle Solver App153
  - Getting Started with the Triangle Solver App153
14 The Explorer Apps157
- Linear Explorer App157
- Quadratic Explorer App158
- Trig Explorer App159
15 Extending Your App Library161
- Creating New Apps Based on Existing Apps161
- Resetting an App163
- Annotating an App with Notes163
- Sending and Receiving Apps163
- Managing Apps164
16 Using Mathematical Functions165
- Math Functions165
- Keyboard Functions165
- The Math Menu168
- Math Functions by Category170
- Units and Physical Constants189
  - Units189
  - Physical Constants191
17 Lists193
- Introduction193
- Create a List in the List Catalog193
  - The List Editor194
  - Contents194
- Deleting Lists196
- Lists in the Home View197
- List Functions198
- Finding Statistical Values for Lists201
18 Matrices203
- Introduction203
- Creating and Storing Matrices204
- Working with Matrices205
- Matrix Arithmetic208
- Solving Systems of Linear Equations210
- Matrix Functions and Commands212
  - Argument Conventions213
- Matrix Functions213
19 Notes and Info219
- The Notes Catalog219
20 Variables and Memory Management227
- Introduction227
21 Programming239
- Introduction239
22 Reference Information319
- Glossary319
- Resetting the HP 39Gii321
- Operating Details323
- Variables323
  - Home Variables323
- App Variables324
- Functions and Commands332
- Constants336
  - Program Constants336
  - Physical Constants337
- Status Messages337
23 Appendix: Product Regulatory Information341
- Federal Communications Commission Notice341
- European Union Regulatory Notice343
- Japanese Notice344

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