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What Stands Out
Advanced Functions
Equipped with over 280 functions, including complex number calculations, matrix operations, and calculus, the FX-991ESPLUS caters to students and professionals, tackling a wide range of mathematical problems efficiently.
Natural Display
Features a natural textbook display that shows fractions, roots, and decimals exactly as they appear in textbooks, enhancing understanding and reducing errors for students and professionals alike.
Durable Build
Designed with a robust exterior and a protective hard case, this calculator withstands daily wear and tear, making it a reliable companion for classrooms and workplaces, ensuring longevity and value.
產品詳情
| Package Weight | 1.27 Pound |
Who Should Buy?
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Students
Perfect for students from high school to university, providing essential functions for mathematics and science courses.
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Engineers
Ideal for engineers needing advanced calculations, including complex numbers and statistical analysis in their work.
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Researchers
Useful for researchers who require precise calculations in various scientific fields, featuring a wide range of functionalities.
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Beginner Users
May be overwhelming for those unfamiliar with scientific calculators due to its extensive features and functions.
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Casual Users
Not suitable for casual users who only require basic arithmetic operations without advanced scientific functions.
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Budget Shoppers
For those seeking low-cost options, the FX-991ESPLUS may be too expensive compared to simpler calculators.
產品敘述
CASIO Scientific Calculator FX-991ESPLUS
有疑問？ 與我們聊天
客戶問題＆回答
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題:
What features does the CASIO Scientific Calculator FX-991ESPLUS offer?
回答: The CASIO Scientific Calculator FX-991ESPLUS boasts a range of features including over 400 functions such as calculations for algebra, calculus, and statistics. It supports complex number calculations and can perform matrix operations and vector calculations. This makes it a versatile tool for students and professionals alike, whether you're solving equations in a classroom or conducting research in the field. -
題:
How do I perform statistical calculations with the FX-991ESPLUS?
回答: To perform statistical calculations, simply select the 'Statistics' mode on the calculator. You can input data sets and use functions for mean, median, standard deviation, and more. This capability is especially useful for students in courses like Statistics and Data Analysis, as it allows them to quickly process large sets of data and interpret the results efficiently. -
題:
Can I use the CASIO FX-991ESPLUS for engineering courses?
回答: Yes, the CASIO FX-991ESPLUS is well-suited for engineering courses. It includes functions for calculus, such as differentiation and integration, as well as conversion between different units, making it ideal for engineering calculations and projects. This versatility helps students and professionals apply mathematical concepts in real-world engineering scenarios effectively. -
題:
Is the display of the FX-991ESPLUS easy to read?
回答: Absolutely! The CASIO FX-991ESPLUS features a natural textbook display that presents calculations and results in a format similar to how they appear in textbooks. This design enhances readability, helping users to better understand complex equations. This feature is particularly beneficial during exam preparations, as visualizing problems similarly to written materials can improve comprehension. -
題:
How long does the battery of the FX-991ESPLUS last?
回答: The CASIO FX-991ESPLUS operates on a solar battery system coupled with a backup battery. This configuration allows for extended usage in various environments, from classrooms to outdoor settings. The solar feature is especially advantageous during prolonged study sessions, ensuring that battery life won't hinder your calculations during important exams or late-night study sessions. -
題:
What types of mathematical problems can I solve with this calculator?
回答: You can tackle a wide range of mathematical problems with the FX-991ESPLUS—from basic arithmetic to advanced calculus. This includes polynomial equations, trigonometric functions, and logarithms, making it suitable for high school and college-level courses. Whether you're preparing for exams or just need to solve a complex equation, this calculator covers all your mathematical needs. -
題:
Is the CASIO FX-991ESPLUS suitable for high school students?
回答: Yes, the FX-991ESPLUS is perfect for high school students, as it meets the requirements of various math and science curricula. It enables students to explore concepts in algebra, geometry, and calculus with its comprehensive set of functions. This calculator equips learners with the tools they need to excel in their studies and test-taking scenarios, providing an essential resource throughout their education. -
題:
Does the calculator have programmable features?
回答: While the CASIO FX-991ESPLUS does not support traditional programming features like programmable calculators, it offers extensive built-in functions to perform calculations and store values. Users can store frequently used equations or constants in its memory for quick access. This is especially helpful for students who regularly encounter similar problems or need to reuse specific formulas in their calculations. -
題:
Can the FX-991ESPLUS handle complex numbers?
回答: Yes, the FX-991ESPLUS is designed to handle calculations involving complex numbers adeptly. Users can perform operations like addition, subtraction, multiplication, and division with complex numbers, which is crucial for advanced mathematics courses. This capability is invaluable for students and professionals working in fields such as engineering and physics, where complex number calculations are common. -
題:
Where can I buy CASIO Scientific Calculator FX-991ESPLUS in Hong Kong?
回答: You can purchase the CASIO Scientific Calculator FX-991ESPLUS at Ubuy. Ubuy offers a range of options for this scientific calculator, ensuring you have access to this essential tool for your academic or professional needs.
Casio Editorial Review
The Casio fx-991 ES Plus is a powerful calculator suitable for use by beginners up to professionals such as engineers and scientists. The calculator can easily turn decimals into fractions by pressing the SD key and has the capability to solve cubic polynomials for complex roots and display the complex roots too. Users can also check the manual for instructions on how to work with imaginary numbers. The calculator is made in China and does not come with a physical manual, but an online manual is available as a PDF. Overall, the Casio fx-991 ES Plus is a powerful and versatile calculator that is well worth the investment.
Customer Reviews & Ratings
1 客戶評分
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5 星
100%
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0%
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3 星
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2 星
0%
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1 星
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優點
- Can turn decimals into fractions easily
- Can solve cubic polynomials for complex roots and display the complex roots
- Suitable for beginners up to professionals
- Powerful and versatile
- Worth the investment
缺點
- Made in China
Platform Trust & Buyer Confidence
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Sam
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“Great product, good packing, the goods arrived quickly and well protected.”
6 Jun 2026 · via Trustpilot
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“Great products and services”
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“Good market place with decent prices”
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“whatever you want you will get delivered at reasonable pricing. I am a regular customer.”
18 Mar 2025 · via Trustpilot
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“I've had a wonderful experience shopping with UBUY Hong Kong. The customer service is outstanding, and my orders always arrive on time. Very satisfied with their services!”
2 Jun 2024 · via Trustpilot
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Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
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