  # Magic Calculator

Version 2.15 (May 2020)

# Faster than a spreadsheet, Better than a calculator

## A fast calculator

Magic Calculator starts instantly, then just type your calculation in natural notation and get results while keyboarding.

## A handy tool

Do you need to do some intermediate calculations ?

Magic Calculator allows you to define as many calculation rows as you want. Add a row by pressing enter, it's as easy as a text editor.

You can use the result of a calculation row with the @ symbol, followed by the number of the row. You can also define variables with a more meaningful name : variable's name = a calculation.

If you change a row in a document, all rows that use its result are automatically updated.

## Instant visualization of curves

If you define a function of one variable, for example, by writing : f(x) = cos(x^2), Magic Calculator opens automatically a new window to visualize the graph of the function.

By using mouse wheel, and drag&drop you can easily zoom and move the display.

If you define more functions, this window will allow you to select which ones you want to display.

## Other features

Magic Calculator can handle many documents at the same time. You can save them to reuse them later.

A lot of mathematics functions and constants are pre-defined. The supported functions are : int (next lowest integer value by rounding down), sqrt (square root), abs (absolute value), cos , sin , tan , acos , asin , atan , ln , log ; and constants are : e et pi. Mathematics operators : +, -, *, /, ^ (power).

To write floating numbers you can use . (point) or , (comma) as decimal separator. You can also use the E notation for power of 10 (example : 1.15E6 for 1.15*10^6 = 1 150 000).

## Localization

Magic Calculator is fully translated into English and in French.