Casio Rekenmachine Fx 9860Gii

Perform advanced calculations with the virtual Casio fx-9860GII graphing calculator

Comprehensive Guide to the Casio fx-9860GII Graphing Calculator

The Casio fx-9860GII is one of the most advanced graphing calculators available for students and professionals in mathematics, engineering, and scientific fields. This comprehensive guide will explore its features, capabilities, and practical applications to help you maximize its potential.

Key Features of the Casio fx-9860GII

• High-Resolution Display: 216 × 320 pixel LCD with 65,000 colors for clear graph visualization
• Processing Power: 29,000 bytes RAM and 1.5MB flash memory for storing programs and data
• Programming Capability: Supports Casio Basic programming language for custom applications
• USB Connectivity: Allows data transfer to computers for analysis and backup
• Multiple Graphing Modes: Can display up to 20 graphs simultaneously with different styles
• Advanced Mathematics: Includes computer algebra system (CAS) capabilities for symbolic mathematics
• Statistical Functions: Comprehensive statistical analysis tools including regression models
• 3D Graphing: Capability to plot and analyze 3-dimensional graphs

Technical Specifications Comparison

Feature	Casio fx-9860GII	TI-84 Plus CE	HP Prime
Display Resolution	216 × 320 pixels	320 × 240 pixels	320 × 240 pixels
Color Support	65,536 colors	16-bit color	16-bit color
RAM	29 KB	128 KB	256 MB
Flash Memory	1.5 MB	3 MB	512 MB
Programming Language	Casio Basic	TI-Basic	HP PPL
CAS Capability	Yes	No (on standard model)	Yes
3D Graphing	Yes	No	Yes
Price Range (USD)	$90-$120	$120-$150	$130-$160

Advanced Mathematical Capabilities

The fx-9860GII excels in several advanced mathematical areas:

1. Symbolic Computation: The calculator can perform symbolic operations like solving equations exactly (e.g., solving x² – 5x + 6 = 0 gives exact solutions x=2 and x=3 rather than decimal approximations).
2. Numerical Integration: Can compute definite integrals numerically with high precision, useful for calculus problems.
3. Differential Equations: Supports solving first and second-order differential equations graphically and numerically.
4. Matrix Operations: Comprehensive matrix functions including determinant, inverse, eigenvalues, and eigenvectors.
5. Complex Numbers: Full support for complex number calculations in both rectangular and polar forms.
6. Financial Calculations: Includes time-value-of-money functions for business and finance applications.

Programming with the fx-9860GII

The calculator’s programming capability using Casio Basic allows users to create custom applications. Here’s a basic structure of a Casio Basic program:

"QUADRATIC FORMULA"
"AX²+BX+C=0"→Str 1
Locate 1,1,Str 1
?→A:?→B:?→C
B²-4AC→D
If D≥0
Then
(-B+√(D))/(2A)→X
(-B-√(D))/(2A)→Y
"ROOTS ARE"→Str 2
Locate 1,2,Str 2
Locate 1,3,X
Locate 1,4,Y
Else
"NO REAL ROOTS"→Str 3
Locate 1,3,Str 3
IfEnd

This simple program solves quadratic equations by prompting for coefficients A, B, and C, then displays the roots (if they exist).

Educational Applications

The fx-9860GII is approved for use on many standardized tests including:

• SAT (College Board approved)
• ACT (with some restrictions)
• AP Calculus, Statistics, and Physics exams
• IB Mathematics exams
• Many college entrance exams worldwide

For official information about calculator policies on standardized tests, visit the College Board SAT Calculator Policy.

Scientific and Engineering Applications

Professionals in various fields find the fx-9860GII invaluable:

Field	Key Applications	Relevant Features
Electrical Engineering	Circuit analysis, signal processing	Complex numbers, graphing, matrix operations
Mechanical Engineering	Stress analysis, dynamics	Differential equations, numerical integration
Physics	Wave analysis, quantum mechanics	3D graphing, symbolic computation
Chemistry	Reaction kinetics, thermodynamics	Statistical analysis, equation solving
Economics	Econometric modeling	Regression analysis, financial functions

Tips for Effective Use

1. Master the Menu System: The fx-9860GII has a hierarchical menu system. Spend time learning where different functions are located to improve efficiency.
2. Use the Catalog: Press [SHIFT][4] to access the catalog of all available functions – this is invaluable when you can’t remember a specific command.
3. Customize Your Settings: Adjust the display contrast, angle mode (degrees/radians), and other settings to match your preferences.
4. Leverage Programs: For repetitive calculations, write small programs to automate the process. This saves time and reduces errors.
5. Graph Strategically: When graphing functions, start with a wide view to understand the overall behavior, then zoom in on areas of interest.
6. Use the Table Feature: The table function (accessed via [MENU][8]) is excellent for evaluating functions at specific points without graphing.
7. Backup Important Data: Use the USB connectivity to backup programs and data to your computer regularly.

Common Mistakes to Avoid

• Angle Mode Confusion: Forgetting whether you’re in degree or radian mode can lead to incorrect trigonometric results. Always check the display indicator.
• Parentheses Errors: The calculator follows standard order of operations, so improper use of parentheses can dramatically change results.
• Memory Management: Failing to clear memory before important calculations can lead to unexpected results from previous operations.
• Graph Window Settings: Incorrect window settings can make graphs appear as straight lines or not appear at all.
• Overwriting Programs: Accidentally overwriting custom programs can be frustrating – always save backups.
• Battery Neglect: While the calculator has good battery life, always check batteries before important exams or projects.

Learning Resources

To master the fx-9860GII, consider these resources:

• The official Casio Education website offers manuals, tutorials, and classroom activities.
• Many universities provide calculator workshops. For example, MIT’s Mathematics department often has resources for scientific calculator use.
• YouTube channels like “Casio Calculator Tutorials” offer video walkthroughs of advanced features.
• Online forums such as Cemetech have active communities discussing Casio calculator programming and techniques.

Maintenance and Care

To ensure your fx-9860GII remains in optimal condition:

1. Store the calculator in its protective case when not in use to prevent screen damage.
2. Clean the screen with a soft, slightly damp cloth – never use abrasive cleaners.
3. Replace batteries when the low battery indicator appears to prevent memory loss.
4. Avoid exposing the calculator to extreme temperatures or humidity.
5. For the USB port, insert and remove the cable gently to prevent damage.
6. If the calculator will be unused for extended periods, remove the batteries to prevent corrosion.

Future of Graphing Calculators

While smartphones and computers can perform many calculator functions, graphing calculators like the fx-9860GII remain relevant because:

• They’re permitted on standardized tests where phones/computers are banned
• Their tactile buttons allow for faster input of mathematical expressions
• They provide a distraction-free environment for focused mathematical work
• Their durability makes them reliable in various environments
• They offer specialized mathematical functions not easily replicated on general-purpose devices

As technology advances, we can expect future graphing calculators to incorporate:

• More advanced CAS capabilities
• Enhanced connectivity with other devices
• Improved programming environments
• Better visualization tools for 3D graphing
• Integration with cloud services for data storage and sharing

Conclusion

The Casio fx-9860GII represents a powerful tool for mathematical exploration and problem-solving. Its combination of advanced features, programming capability, and robust construction make it an excellent choice for students and professionals alike. By mastering its functions and capabilities, users can significantly enhance their mathematical productivity and understanding.

Whether you’re preparing for advanced mathematics courses, tackling engineering problems, or conducting scientific research, the fx-9860GII provides the computational power and flexibility needed to succeed in today’s quantitative world.