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The [math] log menu, The 1, Log menu – Texas Instruments TI-73 EXPLORER User Manual

Page 60: Log( log( 1

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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.

1 " " "
NorN

1 !

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

"

"

"

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

3 0

E b

³

For 10x =a, log

10

a=x