Advanced fx calculator 991 es plus & 991 ms plus 4.4.2 Apk for Android

Calculator 991 EX 570EX: The Ultimate Classroom Companion

The Calculator 991 EX 570EX is widely regarded as the best classroom calculator, making it the top choice for high school and university students. With its natural display and powerful functions, this calculator stands out as the most highly recommended product for academic use. Its beautifully designed scientific layout allows for easy one-handed operation.

Key Features

• Math Display: Visualizes math expressions, square roots, fractions, and more just like they appear in textbooks.


• Advanced Modes: Offers both scientific hyper calculator mode and simple scientific calculator mode, combining multiple functions in one app.

Basic and Advanced Calculations

The Calculator 991 EX 570EX excels in performing both basic and advanced mathematical functions:

• Basic Calculator: Handles fundamental math functions, percentages, and progresses to advanced calculations including powers, roots, logarithms, and trigonometric functions.


• Smart Scientific Calculator: Features scientific calculations such as equation solving, derivatives, trigonometric calculations, integrals, logarithmic calculations, and more.

Equation Solver

This calculator can solve:

1. Quadratic equations


2. Cubic equations


3. Quartic equations


4. Systems of equations

It efficiently finds roots for any polynomial equation, making it a versatile tool for students.

Real Engineering Simulator

The Calculator 991 EX 570EX includes features from various models such as:

• 500 ES


• 500 MS


• 570 ES Plus


• 82 MS & 82 ES


• 991 ES Plus

Its layout is similar to calculators like the 570 ES Plus and 991 EX, supporting most features of popular models like T 34, T 36 Pro, T 30, and T 84 Plus.

Graphing Capabilities

This scientific calculator simulates graphing capabilities for models such as T 83, T 84, and T 89. It can draw graphs in:

• Cartesian


• Polar


• Parametric


• Implicit functions

Fraction and Integral Calculations

The calculator simplifies fraction problems, converting between fractions and decimals with ease. Additionally, it provides powerful tools for:

• Integration


• Derivatives


• Numerical integration and differentiation

Complex Numbers and Advanced Functions

With capabilities to convert between rectangular and polar coordinates, the calculator supports:

• Trigonometric functions (sine, cosine, etc.)


• Calculations with an infinite number of digits


• Random number generation, combinations, permutations, GCD, and LCM


• Prime factorization

Matrix and Vector Calculations

Perform matrix operations such as:

• Finding determinants


• Summing and multiplying matrices


• Calculating inverses

Additionally, it can handle vector operations including scalar and cross products.

Statistical Functions

Finally, the Calculator 991 EX 570EX offers statistical calculations for:

• Binomial distributions


• Poisson distributions


• Normal distributions


• Chi-Squared tests


• Regression calculations


• Standard deviation

In conclusion, the Calculator 991 EX 570EX is a comprehensive tool for students, making it an essential addition to any academic toolkit.