Negotiable

                                            Specifications:
• Brand: Casio
• Code: CAL0002
• Model: fx-991ES PLUS
• 417 Functions
• Two-way power (Solar + Battery): Solar powered when light is sufficient, battery powered when light is insufficient
• Plastic keys: Designed and engineered for easy operation
• Natural V.P.A.M. display: Display expression same as textbook
• List based STAT-data editor: Viewing and editing of input data in list format, showing data groups (x-data, y-data, frequency) and surrounding data
• Multi-replay: Quick and easy recall of previously executed formulas for editing and re-execution
• 10 + 2 digits: 10-digit mantissa + 2-digit exponential display
• Dot matrix display: High-resolution screen provides beautiful looking graphs every time
• Random Integers
• Fraction Calculations
• Combination and Permutation
• Statistics (List-based STAT data editor, Standard deviation, Regression analysis)
• 9 Variables
• Table Function
• Comes with new slide-on hard case
• Equation Calculations
• Integration/Differential Calculations
• Matrix Calculations
• Vector Calculations
• Complex Number Calculations
• CALC Function
• SOLVE Function
• Base-n Calculation
• Made in Thailand                                    

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