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) : Functions

Share
Share
dCode and you

dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!
A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!


Team dCode likes feedback and relevant comments; to get an answer give an email (not published). It is thanks to you that dCode has the best Logarithm tool. Thank you.

Logarithm

Sponsored ads

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).

Answers to Questions

What is the natural logarithm? (Definition)

The definition of 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).

Example: $ \log(e) = \ln(e) = 1 $

Example: $ \log(1) = \ln(1) = 0 $

log

Some people and bad calculators 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 (with base e).

What is the decimal logarithm (log10)?

The decimal logarithm noted $ \log_{10} $ or log10 is the base $ 10 $ logarithm. This is one of the most used logarithms in calculations and logarithmic scales. $$ \log_{10}(x) = \frac { \ln(x)} { \ln(10) } $$

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

What is the binary logarithm (log2)?

The binary logarithm noted $ \log_{2} $ (or sometimes $ lb $) is the base $ 2 $ logarithm. This logarithm is used primarily for computer calculations. $$ \log2(x) = \frac {\ln(x)} {\ln(2)} $$

Use the formula above to calculate a log2 with a calculator with only the log key.

Source code

dCode retains ownership of the source code of the script Logarithm online. 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, Matlab, etc.) which dCode owns rights will not be released for free. To download the online Logarithm script for offline use on PC, iPhone or Android, ask for price quote on contact page !

Questions / Comments

Team dCode likes feedback and relevant comments; to get an answer give an email (not published). It is thanks to you that dCode has the best Logarithm tool. Thank you.


Source : https://www.dcode.fr/logarithm
© 2019 dCode — The ultimate 'toolkit' to solve every games / riddles / geocaches. dCode
Feedback