Scientific calculator plus 991

Scientific Calculator Plus 991 is a calculator for Android devices. This powerful app supports various mathematical formulas and can calculate over 300 basic functions and 115 advanced functions. It displays the results on a coordinate axis, making them clearer and easier to understand. This powerful app is also very easy to use, making it an excellent tool for anyone who needs to perform mathematical calculations.

Features:

A multi-functional advanced calculator

Supports from basic mathematics to advanced math functions

Combines of hyper calculator and simple scientific calc

Includes brilliant equation solver

A real engineering simulator

Calculate with infinity number of digits, prime factors, random numbers, combinations, permutations, GCD, and LCM

Function graph, polar, parametric, and implicit function

Calculate integrative, derivative, differentiation, and integration

Math formula, physics formula, unit conversion, theme, font, and programming

Highlights:

OWN THE INTERFACE OF POPULAR POCKET COMPUTERS

Scientific calculator plus 991 is set up with an interface system similar in design to current popular calculators such as 300 Plus and 115 Plus. The interface is designed to be exactly the same in every detail and from the results screen to the numbers and functions available on that calculator. Thanks to that, in the process of using the application, users will have the same feeling as using a real pocket computer. Now just bring your smartphone device with this application installed and you will be able to perform difficult maths in a simple way. In addition, you can also switch the interface to use different types of calculators such as basic, advanced and even scientific calculators with advanced functions and calculations with greater difficulty.

DISPLAY RESULTS IN VARIOUS FORMATS AND COORDINATE AXES

After performing the calculations and getting the results, depending on what operations you used before, the result will not be an integer. So to see more accurate results, users can use the change result feature on the application's interface. This feature will allow you to view your answers in different formats such as decimal, fraction, DMS and Polar. Each display will represent the calculated answer in different forms so you can use them for your purposes. In addition, when performing equation solutions, users can view extremely accurate coordinate axes charts. As a result, you will be able to solve difficult problems related to graphs of each type of equation as easily and quickly as possible.

Tips and Tricks:

Open Scientific calculator plus 991 and choose a mode such as 991, 84 graphing, or Integral 991 in the menu.

Enter your expression using the keypad and use cursor keys to edit fractions, powers, roots, and functions.

After you confirm the expression, review the result in the history line and press the menu key to store or reuse it.

Then, open Solver or Matrix from the tools panel to input coefficients, matrices, or vectors and compute solutions.

So, switch to Graphing, define functions or parametric forms, set the window, and use trace or root to analyze the curve.

User Reviews:

Just buy it if you're in a field like math or engineering and you need a solid calculator.Here's what I like:(1)  It handles symbolic manipulations very well(2)  Reliable outputs and stable performance(3)  Lots of useful mathematical functions(4)  Layout and buttons work exactly like a regular calculator, and some people may not like that, but I like the simplicityHere's what I don't like:(1) The icon is incomprehensive.  It's way too busy looking.  I have it on my dock and it's annoying me everyday.(2) Cannot use finger to move cursor around.  You can tap on a location, but it's not accurate enough to get you to where you need in the expression.  I want to be able to use the magnifier to move around.  Currently, I have to use either the arrow keys or external keyboard to move around the expression, which is fine since that's how regular calculators work.  But I think it would be more convenient to use the magnifier.  (3) For some weird reason, why you start up the app, the edit screen will resume with the last expression you worked out.  That means when you open the app, and you start typing in a new expression, it will add to the last expression rather than start a new expression.  It's really annoying, because I have to exit the previous expression before I can type a new calculation every time I open the app. 

Conclusion:

The application supports over 300 basic functions, 115 advanced functions, and includes specialized features such as integral calculations and graphing options. Users can perform calculations involving percentages, powers, roots, trigonometric functions, logarithms, derivatives, and more. Additionally, it offers functionalities for computing infinity numbers, prime factors, random numbers, combinations, permutations, as well as greatest common divisor (GCD) and least common multiple (LCM), making it a comprehensive tool for any mathematics-related tasks.