Casio fx-991MS-2 2-Line Scientific Calculator, 401 Functions

Overview

The Casio fx-991MS-2 (SKU: FX991MSPLUS2) is a 2-line display scientific calculator with 401 functions. It covers fraction calculations, combination and permutation, statistics with regression analysis, equation calculations, integration and differential calculations, base-n calculations, complex numbers, matrix and vector calculations, and 40 scientific constants. Includes a slide-on hard case. It includes all functions of the fx-82MS/85MS/350MS, plus additional advanced capabilities.

Key Features

• 401 functions: Covers a wide range of mathematical and scientific calculations.
• 2-line display: Shows input expression and calculated result simultaneously.
• Fraction calculations: Full fraction operation and decimal conversion support.
• Combination and permutation: Built-in nCr and nPr functions.
• Statistics: STAT data editor, standard deviation, and regression analysis.
• 9 variable memories: Store and recall values during calculations.
• Equation, integration, and differential calculations: Advanced mathematics functions.
• Base-n calculations and conversions: Binary, octal, decimal, and hexadecimal.
• Complex number, matrix, and vector calculations.
• 40 scientific constants and metric conversion.
• CALC and SOLVE functions.
• Hard case included.

Specifications

• Brand: Casio
• Model / SKU: FX991MSPLUS2
• Number of functions: 401
• Display: 2-line LCD
• Number format: Fix, Sci, Norm, engineering symbol, engineering notation, fraction/decimal conversion
• Memory: 9 variable memories, independent memory, answer memory
• Scientific constants: 40
• Accessories: Slide-on hard case included
• Weight: 0.19 kg
• UPC: 889232607429

Calculation Functions

• Basic: Basic calculations, bracket, fraction, sexagesimal, reciprocal, percent, factorial, π, calculations with √ and π, rounding, transcendental e, base-n, logical operators, complex numbers, matrices, vectors, differential, integration, multi-statement command, continuous calculation, replay, multi-replay, CALC, SOLVE
• Functions: Basic mathematical functions, absolute value, power (square, cube, nth), square root, trigonometric and inverse trigonometric, hyperbolic and inverse hyperbolic, exponential and logarithmic, log not base 10, coordinate conversion, combination and permutation, random number generation, summation
• Other: Equation, physics/chemistry functions, 40 scientific constants, metric conversion
• Statistics: STAT data editor, basic statistics, regression analysis

Frequently Asked Questions

How many functions does the fx-991MS-2 have?

401 functions, covering basic through advanced mathematics including calculus, matrix, vector, complex numbers, and statistics.

Does it include a protective case?

Yes. A slide-on hard case is included.

How many variable memories does it have?

9 variable memories, plus independent memory and answer memory.

What advanced functions does it include beyond basic scientific calculators?

Equation calculations, integration and differential calculations, base-n calculations and conversions, complex number calculations, matrix calculations, vector calculations, and 40 scientific constants — in addition to all functions of the fx-82MS/85MS/350MS.

Why Choose

Casio fx-991MS-2 is a 401-function 2-line scientific calculator covering advanced mathematics including calculus, matrix, vector, complex numbers, statistics with regression, and 40 scientific constants — with a hard case included. Sold with UPC 889232607429 for easy verification.