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Posted on 23:14, 16 Jun 2014
ffur2007slx2_5: (A3 1.20) To clarify: y = 10 ^ x // x = log y People use logarithm at the purpose of simplifying multiplication via exponents plus years before. 23456*45634 = 1.07039e+009 log 23456 = 4.37025; log 45634 = 4.65929; (log 23456) + (log 45634) = 9.02954 10^((log 23456) + (log 45634)) = 10 ^ 9.02954 // same as 23456*45634 As modern usage, for instance, to evaluate another exponent when multiple is known (Which magnitude is 4 times stronger than 8.3 earthquake?): //_Unknown = log x; 8.3 = log y // x = 10 ^_Unknown; y = 10 ^8.3 //x/y = (10 ^_Unknown)/(10 ^8.3) = log 4 // x/y = _Unknown – 8.3 = 0.6 //_result = 8.9 magnitude _result = (log 4) + 8.3

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 ____________________________________________________________________________________________
-| Base-10 logarithm of x. |= Description
+| Base-10 logarithm of x. |DESCRIPTION=
 ____________________________________________________________________________________________
-| [[Number]] <nowiki>=</nowiki> '''log''' x |= Syntax
+| [[Number]] <nowiki>=</nowiki> '''log''' x |SYNTAX=
 |p1= x: [[Number]]
-| [[Number]] |= Return value
+| [[Number]] |RETURNVALUE=
 ____________________________________________________________________________________________
-|x1= <code>_log = [[log]] 10; // 1</code> |= Example 1
+|x1= <code>_log = [[log]] 10; // 1</code> |EXAMPLE1=
 ____________________________________________________________________________________________
-| [[Math Commands]], [http://en.wikipedia.org/wiki/Logarithm Logarithm] |= See also
+| [[Math Commands]], [http://en.wikipedia.org/wiki/Logarithm Logarithm] |SEEALSO=
 }}