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Calculator

Tool to make symbolic computations. A formal calculator to make exact scientific calculations, with parenthesis, variables, etc.

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Calculator -

Tag(s) : Symbolic Computation

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# Calculator

## Formal Calculator

 Result Format Automatic Selection Exact Value (when possible) Approximate Numerical Value Scientific Notation

## Solve an equation (find x)

⮞ Go to: Equation Solver

### What is a formal calculator? (Definition)

A formal/symbolic calculator is an computation program that allows all calculations (with or without unknown) and answer an exact result (or approximate) with the most simplification possible.

It can also be used to perform classic numerical calculations.

### How to make a formal calculation?

Write the calculation to be performed (if there are variables or functions, respect the syntax).

Example: Simplification of polynomials with variable: $$x^2-(x-1)(x+2)+2x = x+2$$

Example: Computation (addition, subtraction, multiplication, division) with unknowns: $$a+1+a-2 = 2a-1$$

These are calculations with variables, but not an equation resolution. dCode has also an equation solver, and other calculus tools such as derivatives, primitives, integrals, etc.

### What are allowed functions?

Most common functions (parenthesis are mandatory) are

sqrt() or √() square root exponential natural logarithm (base e) logarithm (base 2) logarithm (base 10) cosine sine tangent arc sine arc cosine arc tangent cosecant secant cotangent arc cosecant arc secant arc-cotangent hyperbolic cosine hyperbolic sine hyperbolic tangent hyperbolic arc sine hyperbolic arc cosine hyperbolic arc tangent hyperbolic cosecant hyperbolic secant hyperbolic cotangent hyperbolic arc cosecant hyperbolic arc secant hyperbolic arc cotangent absolute value function sign argument imaginary part real part i (imaginary unit)

### What is the difference between a formal calculator and a standard calculator?

A formal calculator can perform symbolic calculations, while a standard calculator performs numerical calculations. The formal calculator preserves variables and symbolic expressions.

## Source code

dCode retains ownership of the "Calculator" source code. Except explicit open source licence (indicated Creative Commons / free), the "Calculator" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or the "Calculator" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "Calculator" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app!
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## Cite dCode

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Cite as source (bibliography):
Calculator on dCode.fr [online website], retrieved on 2023-12-05, https://www.dcode.fr/formal-calculator

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