Noun

Singular logarithm

Plural logarithms

logarithm (plural logarithms)

  1. (mathematics) For a number x, the power to which a given base number must be raised in order to obtain x. Written logbx. For example, log101000 = 3 because 10 = 1000.

Synonyms

Derived terms

Anagrams

From Wiktionary under the GNU Free Documentation License.
Fri Feb 5 17:35:18 2010

In mathematics, the logarithm of a number to a given base is the power or exponent to which the base must be raised in order to produce the number. For example, the logarithm of 1000 to base: 10 is 3, because 3 is the power to which ten must be raised to produce 1000: 10 = 1000, so log101000 = 3. Only positive real numbers have real number logarithms, negative and complex numbers have complex logarithms.

The logarithm of x to the base b is written logb(x) or, if the base is implicit, as log(x). So, for a number x, a base b and an exponent y,

The bases used most often are 10 for the common logarithm, e for the natural logarithm, and 2 for the binary logarithm.

An important feature of logarithms is that they reduce multiplication to addition, by the formula:

That is, the logarithm of the product of two numbers is the sum of the logarithms of those numbers.

The use of logarithms to facilitate complicated calculations was a significant motivation in their original development. Logarithms have applications in fields as diverse as statistics, chemistry, physics, astronomy, computer science, economics, music, and engineering.

From Wikipedia under the GNU Free Documentation License
Fri Mar 5 17:53:59 2010

SQL Server Logarithmic Functions :: BlackWasp Software Development
blackwasp.co.uk
SQL Server Logarithmic Functions :: BlackWasp Software Development

unknown

hu, 26 Nov 2009 10:15:36 GM

The forty-second part of the SQL Server Programming Fundamentals tutorial continues the examination of the mathematical Transact-SQL (T-SQL) functions. This article considers the . logarithmic. functions that are provided by Transact-SQL.

Explorations in Mathematics by A A Hattangadi
indiaclub.com
Explorations in Mathematics by A A Hattangadi

unknown

Mon, 01 Apr 2002 08:00:00 GM

Infinite series for . logarithms. to base e. Calculating . logarithms. of large numbers. Other infinite series for calculating . logarithms. . Applications of . logarithms. . Conclusion Appendices BASIC program logbase basic program . logarithm. ...

Open Sesame : Built on Facts
scienceblogs.com
Open Sesame : Built on Facts

unknown

Fri, 22 Jan 2010 16:22:50 GM

The solution for n, given b^n = x is just the base b . logarithm. of x. The base 2 . logarithm. of 32 billion is 34.9, so a random string of 35 1s and 0s will keep you safe. But that's an impractically huge and difficult password so we want ...

From Google Blog Search: "logarithm"
Sun Feb 14 08:26:06 2010

Logarithm Dict Science 1866 png
wpcontent.answers.com
Logarithm Dict Science 1866 png
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[source page]

A more modern definition and explanation from 1866 A Dictionary of Science Literature Art Comprising the Definitions and Derivations of the Scientific Terms in General Use together with

fluorine3 4 btn jpg
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fluorine3 4 btn jpg
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[source page]



TrueCalculatorLogarithm png
activemath.org
TrueCalculatorL​ogarithm png
378px x 642px | 43.50kB

[source page]

Drawing a logarithm calculation Extract of the first video at calculators of maths construction page by Harold and Will Thimbleby

From Yahoo Image Search: "logarithm"
Sat Jan 23 19:02:11 2010

How do I write 2logx - 3Logy - 5Logz, as a single logarithm with a coefficient of 1?
Q. How do I rewrite 2logx - 3Logy - 5Logz, as a single logarithm with a coefficient of 1?
Asked by Cake - Mon Jul 20 02:39:00 2009 - - 1 Answers - 0 Comments
Explain the difference between a logarithm of a product and the product of logarithms ?
Q. Explain the difference between a logarithm of a product and the product of logarithms and give examples of each.
Asked by Amy S - Mon Dec 8 17:30:52 2008 - - 3 Answers - 0 Comments

A. logarithm OF a product log(a b) product OF logarithms [ log(a) ] [ log(b) ]
Answered by CogitoErgoCogitoSum - Mon Dec 8 17:41:20 2008

How do you use Excel 2007 to take the logarithm of a whole column of numbers?
Q. I have a column of positive numbers and want to take the natural log of each. I know how to do this for each individual number... but how do you get Excel to do it for the entire column automatically? Please give me the sequence of commands or steps in detail. Thanks in advance.
Asked by Choobeen - Sun Jan 24 23:10:46 2010 - - 1 Answers - 0 Comments

A. Your data in col A, In cell B1 enter =IF(ISBLANK(A1),"",LN(A1) ) Copy this cell, then select whole of col B, then CTRL+V HTH
Answered by Daddy Jan - Mon Jan 25 07:46:38 2010

From Yahoo Answer Search: "logarithm"
Mon Feb 1 03:32:46 2010