Quadratic equations are very easy to solve using a calculator. Alcula’s scientific calculator makes it even easier. This is the first of a series of examples of how entering commonly used formulas as user defined functions into the scientific calculator can help you streamline your work, weather your are checking your homework or verifying the solutions to the exercises in your math textbook.

## Archive for the ‘Online Scientific Calculator’ Category

### How to solve Quadratic Equations

Tuesday, March 16th, 2010### Scientific calculator skins

Monday, March 8th, 2010Following the nice comments received about the new calculator’s functionality, and since no new bugs were reported, I had time to work a bit on the scientific calculator’s look. The new version adds two user selectable color themes: ‘Wooden’ and ‘Smoke’, the original theme is now called ‘Classic’.

### Complex Numbers Calculator (The Square Root of -1 is not NaN)

Tuesday, January 19th, 2010The **online scientific calculator now supports complex numbers operations**. Complex numbers can be input in **Cartesian, Polar, or Exponential form**. You can also use the calculator to convert to and from cartesian, polar or exponential. Read on to find out more.

### Scientific Calculator Notation and Precision

Monday, January 11th, 2010## How to change the notation and precision displayed by the online scientific calculator

The latest release of the online scientific calculator includes a new functionality: The preferences window. Here you can set the display format for the calculator results. This article gives a bit more information on how the calculator stores numbers internally, it’s precision limitations and explains how to use this new feature.

### How to use the Random Function of the Scientific Calculator

Thursday, December 17th, 2009As seen in a previous post, the new online scientific calculator now has a **random generator function**. This article describes the new function in detail and how to use it for generating **random integers** within a specified interval or for simulating random events such as the rolling of a dice.

### Least Common Multiple (LCM) and ROUND functions added to the calculator

Wednesday, December 9th, 2009The **LCM **and **ROUND **functions have been added to Alcula’s Online Scientific Calculator’s release 0.7.

This article describes what they are and how to use them.

### Online Fraction Calculator

Thursday, November 12th, 2009## Using Alcula’s new online scientific calculator as fraction calculator

One of the most unique and useful features of the online scientific calculator is it’s ability to perform calculations on fractions without converting them to floating point numbers. This article describes how to use it’s power to add, subtract, multiply, divide and even raise fractions to a power.

### INT and GCD, new functions of the Online Scientific Calculator

Tuesday, November 3rd, 2009With the latest release (0.6) of the Online Scientific Calculator, come two new functions: **INT (Integer) **and **GCD (Greatest Common Divisor)**. Here is a brief explanation of how they work and why they are useful.

### Edit and Drag Functions

Tuesday, October 20th, 2009A few more improvements to the Online Scientific Calculator…

After implementing functions, in last version, this new release, 0.5, brings a bit of polishing to existing functionalities.

Here is what you will find in the new version:

- You can edit an existing function by clicking on it’s body
- The User Function window is now hidden automatically if no function is defined.
- The User Function window resizes to show the full text of the function.
- You can now drag a function from the User Function List to the calculator.
- Bigger keyboard and display for easier reading.

### Custom functions and random number generator

Tuesday, October 6th, 2009A new version (0.4) of the scientific calculator was released last week, with a few more buttons, useful features, and bug fixes.

### New features available in version 0.4:

- You can now
**define your own functions**to use multiple times in expressions. - A
**pseudo-random number generator**. - A
**reset function**to clear the calculator window. - A
**comma key**to type functions with multiple parameters.