Scientific Calculator fx-991
教育
免費 · App內購買 · 專為 iPad 設計。尚未針對 macOS 驗證。
Scientific Calculator fx-991 – The Ultimate Math & Science Tool!
Struggling with math problems, equations, or integrals? Need a powerful scientific calculator to solve step-by-step?
With Scientific Calculator fx-991, you can calculate, graph, and find formulas instantly – making learning math, physics, and chemistry easier than ever!
Key Features
+ Step-by-step equation solver – Enter any equation and get a detailed step-by-step solution.
+ Advanced scientific functions – Solve fractions, algebra, derivatives, integrals, trigonometry, and more.
+ Graphing mode – Visualize mathematical functions interactively.
+ Extensive formula library – Access key formulas for math, physics, and chemistry in seconds.
+ Unit converter – Quickly convert between different measurement units.
+ Casio fx-991 inspired interface – A familiar and intuitive experience for students.
Perfect for high school and college students, engineers, and professionals in STEM fields!
Who is this app for?
High school students – Solve algebra, calculus, and physics problems efficiently.
College & university students – Master engineering, physics, and complex math subjects.
STEM professionals – Perform advanced calculations quickly and accurately.
Download Scientific Calculator fx-991 now and simplify your calculations!
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.
更多 開發者回覆 We truly appreciate your support! 🙌 Your 5-star rating means a lot to us. Keep enjoying HiEdu, and don’t forget to recommend it to your friends! 🎉
Extremely good
We truly appreciate your support! 🙌 Your 5-star rating means a lot to us. Keep enjoying HiEdu, and don’t forget to recommend it to your friends! 🎉
- Added Daily Challenge with 10 new math questions every day.
- Track your personal progress and compete on the 7-day leaderboard.
1.9.3 10月23日
* Added one-variable polynomial division with quotient and remainder results.
* Improved the formula reference interface.
* Added the periodic table of chemical elements.
* Added the ability to save and manage favorite formulas.
* Improved performance and fixed minor bugs.
1.9.2 9月19日
∙ Updated the formula interface and added the periodic table of elements.
∙ Added lists of favorite and recently viewed formulas.
∙ Improved calculation history for faster viewing and access to results.
1.9.1 9月7日
◆ Enhanced derivative feature: now supports finding the derivative expression of a function, in addition to calculating the derivative value at a specific point.
◆ Performance improvements and bug fixes.
1.9.0 8月21日
∙ More detailed step-by-step solutions for equations and inequalities.
∙ Added mathematical concepts, solution steps, answer verification, and similar practice exercises.
∙ Performance improvements and bug fixes.
1.8.9 7月25日
Optimize speed and detailed results when solving quadratic equations, fractional equations, and rational equations.
1.8.8 5月23日
• Improved accuracy of integral calculations for better results
• Fixed edge cases in numerical integration
1.8.5 5月18日
∙ Improved and optimized search results when users look up formulas and knowledge.
1.8.4 5月14日
Search improvements and optimization:
∙ We have added more physics and math formulas.
∙ Free users can now search without limits.
1.8.3 5月5日
Optimize and improve the SOLVE function
1.8.2 4月24日
Fixed a payment issue when upgrading to premium plans.
1.8.1 4月11日
+ Optimized button size for a more realistic and comfortable tapping experience
+ Improved app launch speed
1.8.0 4月9日
New: 350ES calculator interface added
1.7.9 3月31日
+ Improved and enhanced search results.
+ Fixed issues in the complex numbers section.
1.7.8 3月15日
+ Improved design (button sizes are now more balanced and user-friendly).
+ Enhanced calculation and analysis speed for certain equations and inequalities.
+ Increased graph detail and rendering accuracy.
1.7.7 1月25日
Enter equations directly on the keyboard. The app helps you analyze variations, find extrema, and plot graphs of familiar equations from the high school curriculum.
1.7.6 2025/11/25
The interface changes based on iOS 26.1 provide a more visually appealing design.
1.7.5 2025/11/16
• More detailed explanations for solving quadratic equations.
• Added explanatory insights for statistics and numerical results.
1.7.4 2025/11/02
• More detailed explanations for solving quadratic equations.
• Added explanatory insights for statistics and numerical results.
1.7.3 2025/10/23
Learn math more easily with the new.
Graphs Automatically recognizes equation and inequality types.
1.7.2 2025/10/08
Learn math more easily with the new.
Graphs Automatically recognizes equation and inequality types
1.7.1 2025/10/01
Added feature to find solutions and provide detailed explanations for inequalities.
+Linear inequalities, quadratic inequalities.
+Irrational inequalities (with square roots).
+Fractional inequalities.
1.7.0 2025/09/22
Added feature to find solutions and provide detailed explanations for inequalities.
+Linear inequalities, quadratic inequalities.
+Irrational inequalities (with square roots).
+Fractional inequalities.
1.6.9 2025/09/16
- Minor bug fixes and overall performance improvements.
1.6.7 2025/07/17
In the latest version, after solving first, second, and third degree equations, the app will display the graph of the equation along with some similar example equations to help you better understand it.
1.6.6 2025/07/07
- Added Daily Challenge with 10 new math questions every day.
- Track your personal progress and compete on the 7-day leaderboard.
更多 版本 1.9.3 10月23日
用來追蹤你的資料 以下資料可能用於在其他公司的 App 和網站上追蹤你：
會與你連結的資料 系統可能會收集以下資料，並將其與你的身分連結：
