Casio FX-991ES Plus Scientific Calculator
INTRODUCTION
The Casio FX-991ES Plus Scientific Calculator is a versatile and powerful device tailored to the needs of students, engineers, scientists, and professionals who require advanced mathematical and scientific computation capabilities. It merges an extensive array of functions and attributes with a user-friendly interface, making it an indispensable tool for tackling intricate mathematical equations and scientific challenges. Whether you’re in an educational setting, research laboratory, or workplace, this calculator delivers the functionality and convenience essential for streamlining your calculations.
SPECIFICATION
- Brand: Casio
- Calculator Type: Engineering/Scientific
- Power Source: Battery Powered
- Product Dimensions: 0.01 x 0.01 x 0.01 inches
- Item Weight: 4.6 ounces
- Item model number: FX 991 ES PLUS
- Batteries: 1 LR44 batteries required
WHAT’S IN THE BOX
- Calculator
- User’s Guide
FEATURES
- Large, High-Resolution Display: The FX-991ES Plus features a high-resolution, natural textbook display that mirrors mathematical expressions and results as they appear in textbooks, offering enhanced clarity and the ability to review your work.
- Comprehensive Equation Solving: This calculator provides a broad spectrum of mathematical functions encompassing calculus, algebra, and trigonometry, facilitating the straightforward resolution of intricate equations.
- Vector and Matrix Calculations: It supports operations involving vectors and matrices, rendering it an invaluable asset for individuals working with these mathematical constructs in fields such as mathematics, physics, and engineering.
- Multifaceted Functionality: It caters to diverse mathematical operations, including statistics, complex number computations, and base-n calculations, all within one compact device.
- Fractional Calculations: The calculator excels at precise fraction computations, permitting results to be displayed either as fractions or converted into decimals.
- Solve, Graph, and Table Functions: With the capacity to solve equations, graph functions, and generate tables for various mathematical functions, it offers a comprehensive perspective on mathematical relationships.
- Solar and Battery Power: This calculator can draw power from solar cells and a backup battery, ensuring consistent functionality under varying lighting conditions.
- Natural Textbook Input and Output: It enables the input of mathematical expressions in a manner that emulates traditional written notation, enhancing user-friendliness.
- Intuitive User Interface: The calculator’s straightforward layout and easily navigable buttons simplify the process of accessing different functions and menus.
- Examination Approval: The Casio FX-991ES Plus is officially sanctioned for use in standardized examinations, including SAT, ACT, and AP tests, assuring compliance with educational and professional assessment requirements.
- Sturdy and Portable Design: Characterized by a compact and lightweight design, it is highly portable, and its resilient build ensures it can withstand the rigors of daily usage.
FREQUENTLY ASKED QUESTIONS
What is the Casio FX-991ES Plus Scientific Calculator?
The Casio FX-991ES Plus is a scientific calculator designed for a wide range of mathematical and scientific calculations, including trigonometry, statistics, and complex calculations.
What sets the Casio FX-991ES Plus apart from basic calculators?
The Casio FX-991ES Plus offers advanced scientific and statistical functions, making it suitable for students, engineers, and professionals in various fields.
What is the primary use of the Casio FX-991ES Plus Scientific Calculator?
The primary use of the Casio FX-991ES Plus is to perform mathematical and scientific calculations, including algebra, calculus, and complex equations.
Is the Casio FX-991ES Plus allowed in exams and standardized tests?
The permissibility of using the Casio FX-991ES Plus in exams and standardized tests may vary. It's essential to check with the exam or test regulations to ensure compliance.
What is the power source for the Casio FX-991ES Plus?
The Casio FX-991ES Plus typically uses solar power with a battery backup. It's designed to operate using ambient light and includes a battery for low-light conditions.
Is the Casio FX-991ES Plus suitable for both students and professionals?
Yes, the Casio FX-991ES Plus is suitable for students at various academic levels and professionals in fields like engineering, science, and mathematics.
Can the Casio FX-991ES Plus handle complex number calculations?
Yes, the Casio FX-991ES Plus is capable of handling complex numbers, including arithmetic operations and conversion between rectangular and polar forms.
Does the Casio FX-991ES Plus support matrix calculations?
Yes, the Casio FX-991ES Plus provides matrix calculations, allowing you to perform operations on matrices, including addition, multiplication, and determinants.
Can I use the Casio FX-991ES Plus for statistical calculations?
Absolutely. The Casio FX-991ES Plus is equipped with statistical functions for data analysis, including mean, standard deviation, and regression analysis.
What is the warranty period for the Casio FX-991ES Plus Scientific Calculator?
Warranty periods for the Casio FX-991ES Plus may vary, but they often range from 1 year to several years.
Is the Casio FX-991ES Plus allowed in competitive exams like the SAT or ACT?
The permissibility of using the Casio FX-991ES Plus in competitive exams like the SAT or ACT may vary, so it's essential to review the specific exam guidelines.
What is the maximum number of digits it can display?
The Casio FX-991ES Plus can typically display up to 10 digits on its screen, allowing for precise calculations and results.
Can the Casio FX-991ES Plus convert between different numeral bases?
Yes, the Casio FX-991ES Plus can convert between different numeral bases, such as decimal, binary, octal, and hexadecimal.
Is the Casio FX-991ES Plus suitable for calculus and algebra courses?
Yes, the Casio FX-991ES Plus is a valuable tool for calculus and algebra courses, as it can handle complex equations, derivatives, integrals, and more.
Where can I purchase the Casio FX-991ES Plus Scientific Calculator?
You can typically purchase the Casio FX-991ES Plus Scientific Calculator from authorized retailers, school supply stores, or reputable online marketplaces to ensure you receive a genuine product.
Are there any known compatibility issues with specific accessories or software for the Casio FX-991ES Plus?
The Casio FX-991ES Plus is generally compatible with standard calculator accessories and doesn't typically require additional software. Check the product specifications for any specific compatibility concerns.
User’s Guide