Casio fx-991ZA Plus User's Guide

Casio fx-991ZA Plus Calculator manual cover
Pages 52
Year 2014
Language(s)
English en

Casio fx-991ZA Plus Calculator Specification

The Casio fx-991ZA Plus is a scientific calculator designed to meet the needs of students and professionals in fields requiring complex mathematical computations. This calculator features a high-resolution LCD display, enhancing the readability of calculations and results. It supports a wide array of functions, including 552 scientific functions covering calculus, algebra, statistics, and complex number calculations. The calculator operates using both solar power and a battery, ensuring reliable performance even in low-light conditions. Its dual power system extends the life of the battery and provides an environmentally friendly energy option.

The fx-991ZA Plus includes advanced mathematical capabilities such as matrix and vector calculations, making it suitable for engineering and physics applications. It also features a natural textbook display, allowing users to enter and view expressions in the format found in textbooks, which is especially helpful for educational purposes. The calculator supports equation solving, integration, differentiation, and allows for the computation of logarithms and exponents. It has a robust build with a protective hard cover to withstand everyday use and transport.

Additionally, the calculator includes features such as fraction calculations, random number generation, and a variety of trigonometric functions. The Casio fx-991ZA Plus is designed with user-friendly operation in mind, incorporating an intuitive interface that facilitates quick access to its vast array of functions. The calculator's compact and lightweight design makes it easy to carry, while its durable construction ensures longevity. Overall, the Casio fx-991ZA Plus is a versatile and efficient tool for anyone needing reliable and comprehensive mathematical computation capabilities.

Casio fx-991ZA Plus Calculator F.A.Q.

How do I perform a factory reset on the Casio fx-991ZA Plus calculator?

To perform a factory reset, press SHIFT, then 9 (CLR), 3 (All), and finally = (Yes) to reset all settings and clear memory.

How can I solve quadratic equations using the Casio fx-991ZA Plus?

Use the MODE button to select EQN (Equation Mode), choose the quadratic equation form, and input the coefficients to find the solutions.

What is the process to calculate statistical data on this calculator?

Switch to STAT mode using the MODE button, enter your data points, and use the built-in functions to calculate mean, standard deviation, and other statistical metrics.

How do I enable the complex number calculations on the Casio fx-991ZA Plus?

Press MODE and select the CMPLX (Complex Number) mode, allowing you to perform calculations with complex numbers.

What should I do if my calculator's screen is not displaying properly?

First, check if the contrast needs adjustment by pressing SHIFT, then SETUP, and using arrow keys to find contrast settings. If the problem persists, consider replacing the battery.

How can I compute matrix operations on the Casio fx-991ZA Plus?

Select MATRIX mode using MODE button, input your matrices, and use the calculator's matrix functions to perform operations like addition, subtraction, and multiplication.

How do I calculate integrals on this calculator?

Press the CALC button (∫), input the function and the bounds of integration, then press = to compute the integral.

How can I switch between radians and degrees for angle measurements?

Press SHIFT, then MODE (SETUP), and select Rad or Deg to switch between radians and degrees.

What is the procedure for calculating derivatives on the Casio fx-991ZA Plus?

Utilize the d/dx function by pressing SHIFT and then the CALC button (d/dx). Enter the function and the point of differentiation to calculate the derivative.

How do I troubleshoot if my calculator is not turning on?

Check the battery and replace it if necessary. Ensure the battery is inserted correctly and the contacts are clean.