54 Chapter 2: Math Operations
7302ENG.DOC CH2 Math Operations, English Julie Hewlett Revised: 07/29/98 11:58 AM Printed: 05/19/99 8:58
AM Page 54 of 32
The 1
LOG Menu
The 1 LOG (logarithm) menu lets you select functions that
are used to calculate base-10 and base-e logarithms and
powers.
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1:log( Returns the base-10 logarithm of a value.
2:10^( Raises 10 to a power.
3:ln( Calculates the natural logarithm of a value.
4:e^( Raises e to a power (e = 2.71828182846).

log( log( 1

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1 1

The logarithm is the exponent, x, indicating the power which a
fixed number (using base 10) must be raised to in order to
produce a given number, a.
log( returns the logarithm of a positive real number, an
expression that results in a positive real number, or a list of
positive real numbers.
log(value)
log(list)
Calculate log(30).
:1"""1
30Eb
³
For 10x=a, log10a=x