Scientific calculator plus 991
Scientific calculator plus 991 App Info
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App Name
Scientific calculator plus 991
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Price
Free
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Developer
Tools for student
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Category
Education -
Updated
2025-08-23
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Version
7.4.1.484
Frequently Asked Questions
How do I start using Scientific Calculator Plus 991 for the first time?
Download the app from your store, open it, and follow the onboarding guide to familiarize yourself with the interface and basic functions.
Can I perform basic calculations with this app?
Yes, the app includes a Basic calculator 300 plus for addition, subtraction, multiplication, division, and other fundamental operations.
How do I access advanced features like graphing or symbolic calculations?
Navigate to the corresponding module in the main menu, such as 'Graphing calculator 84 plus' or 'CAS,' for advanced functions.
What should I do if a calculation results in an error?
Ensure you entered the correct expression and syntax; restart the app if needed, or consult help options within the app.
How can I solve equations using this app?
Use the equation solver feature in Scientific calculator 991 or 991 plus from the main menu for quadratic, cubic, or polynomial equations.
Does the app support high-precision calculations?
Yes, it supports calculations with infinity digits of precision, suitable for scientific and engineering tasks; enable this in the settings if necessary.
Are there any subscription fees or in-app purchases?
Some advanced features like CAS or graphing tools may require a one-time purchase or subscription, managed via Settings > Account > Subscriptions.
How do I enable or customize themes and fonts?
Go to Settings > Appearance to choose themes, adjust fonts, and personalize the app's look to your preference.
Can I use this app offline after installation?
Yes, all core features and calculators are available offline once the app is downloaded and installed.
Is technical support available if I encounter bugs?
Yes, contact the support team through the app's Help section or your app store's support page for assistance.
