Search for a tool
Logarithm

Tool for calculating logarithms. The logarithm function is denoted log or ln and is defined by a base (the base e for the natural logarithm).

Results

Logarithm -

Tag(s) : Mathematics

dCode and you

dCode is free and its tools are a valuable help in games, puzzles and problems to solve every day!
You have a problem, an idea for a project, a specific need and dCode can not (yet) help you? You need custom development? Contact-me!

Team dCode read all messages and answer them if you leave an email (not published). It is thanks to you that dCode has the best Logarithm tool. Thank you.

# Logarithm

## Logarithm Calculator

Tool for calculating logarithms. The logarithm function is denoted log or ln and is defined by a base (the base e for the natural logarithm).

### What is the natural logarithm?

The natural logarithm is the function whose derivative is the inverse function of $$x \mapsto \frac 1 x$$ defined for $$x \in \mathbb{R}_+^*$$.

The natural logarithm is noted $$\log$$ or $$\ln$$ and is based on the number $$e \approx 2.71828\ldots$$ (see decimals of number e).

$$\Log(e) = \ln(e) = 1$$

$$\Log(1) = \ln(1) = 0$$

Some people use $$\log$$ for $$\log_{10}$$, so make sure to know which notation is used.

### What is the neperian logarithm?

The neperian logarithm is the other name of the natural logarithm.

### What is the decimal logarithm?

The decimal logarithm noted $$\log_{10}$$ is the base $$10$$ logarithm. This is one of the most used logarithms in calculations and logarithmic scales. $$\log_{10}(x) = \frac { \ln(x)} { \ln(10) }$$

$$\log_{10}(1000) = 3$$

### What is the binary logarithm?

The binary logarithm noted $$\log_{2}$$ (or sometimes $$lb$$) is the base $$2$$ logarithm. This logarithm is used primarily for computer calculations. $$\log(x) = \frac {\ln(x)} {\ln(10)}$$

## Source code

dCode retains ownership of the source code of the script Logarithm. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, etc.) which dCode owns rights can be transferred after sales quote. So if you need to download the Logarithm script for offline use, for you, your company or association, see you on contact page !

Team dCode read all messages and answer them if you leave an email (not published). It is thanks to you that dCode has the best Logarithm tool. Thank you.

Source : http://www.dcode.fr/logarithm
© 2017 dCode — The ultimate 'toolkit' to solve every games / riddles / geocaches. dCode