Casio FX-991ES Plus and FX-115ES Plus 2nd Edition, Learn All Features

Ahmad Shamshiri introduces a tutorial on the Casio fx-991ES Plus Second Edition calculator, highlighting its features and Canadian version differences. The tutorial covers basic operations, advanced functions, and the calculator's protective case. It also explains the keys and their dual functions, including the use of the shift and alpha keys to access additional features. The video promises comprehensive coverage with multiple examples for better understanding.

This section delves into the calculator's basic operations, such as addition, subtraction, multiplication, and division, including order of operations. It explains how to enter and modify calculations, use the memory functions, and work with fractions, decimals, and percentages. The tutorial also covers more advanced features like solving equations, complex calculations, and setting preferences for significant digits, fraction display, and angle units.

The video script continues with instructions on using advanced mathematical functions, such as working with significant digits, scientific notation, and fraction settings. It guides viewers on setting up the calculator for different modes, including normal, mixed, and improper fractions. The tutorial also explains how to convert between degree, radian, and grad units, and how to handle recurring decimals and memory functions.

The paragraph focuses on polynomial calculations, including squaring and roots, as well as using constants like pi and Euler's number. It also explains how to use memory functions for variables and independent memory, demonstrating how to store and recall values for complex calculations. The script provides step-by-step instructions on using the memory features and clearing settings.

This part of the tutorial covers polar and rectangular conversions, unit conversions for length, temperature, speed, and pressure, and the use of constants in calculations. It explains how to convert between different coordinate systems and unit systems, providing examples of converting inches to centimeters and Fahrenheit to Celsius. The script also describes how to access and use scientific constants available on the calculator.

The script introduces advanced calculation features such as modulus operation, permutation and combination calculations, and prime factorization. It explains how to use the calculator to determine the remainder of a division, calculate the number of ways to choose items from a set, and break down numbers into their prime factors. The tutorial also covers summation and product calculations.

This section discusses complex number calculations, including entering complex numbers in different notations, finding arguments, conjugates, and absolute values. It also covers the verification feature, which allows users to check if a function equals zero or meets other conditions. The tutorial provides examples of using these features with the calculator.

The video script explains how to perform calculations in different number bases, such as binary, decimal, and hexadecimal. It also covers matrix operations, including storing, adding, and finding the inverse and determinant of matrices. The tutorial provides step-by-step instructions for entering data and performing these calculations using the calculator.

The paragraph covers integral calculations, where the calculator can evaluate definite integrals to find areas under curves. It also introduces statistical functions, such as linear regression, and explains how to enter data and perform regression analysis. The script provides an overview of the process and mentions that more detailed examples will be provided in separate videos.

In the final paragraph, the tutorial concludes with instructions on how to change the battery of the calculator and a prompt for viewers to access additional related videos. The presenter encourages viewers to like, comment, and subscribe for more content, and highlights the usefulness of the tutorial for those who want to master the Casio fx-991ES Plus calculator.