Question about Texas Instruments BA-II Plus Calculator

# Where is the 'log' key, not the LN key. ? - Texas Instruments BA-II Plus Calculator

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There isn't one.

You can calculate the common logarithm of any number by dividing the natural logarithm of the number by the natural logarithm of 10.
In other words, log(x) = ln(x)/ln(10).

Posted on Sep 28, 2010

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Posted on Jan 02, 2017

Hi,
Sorry to contradict you but there are many types of logarithms, the most important ones are

2. the natural logarithms (logarithms in base e)
3. the binary logarithms (logarithms in base 2)
On calculators, the common logarithms are labeled [LOG], and the natural logarithms are labeled [LN].

The inverse function of the natural log function is the exponential (e^(x)), and the inverse of the log in base ten function is the function ten to the power of. It is called (sometimes) the antilog

Ex:
Question What is the antilog of 3.5678?
Answer The antilog of 3.5678 is 10^(3.5678) = 3696.579068
Verification: log(3696.57908) =3.5678

Hope it helps.

Posted on Nov 29, 2009

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## Related Questions:

### How do i give the value of log

For common log, use the LOG key. For natural log, use the LN key. In either case, enter (or calculate) the value of the argument and then press the appropriate key.

To calculate the common log of 2, press 2 LOG =

To calculate the natural log of 2, press 2 LN =

Sep 08, 2011 | Texas Instruments TI-30XA Calculator

### Where's the "log" key?

There isn't one. You can calculate the common logarithm of any number by using the relationship
log x = ln x / ln 10. In words, calculate the log of a number by dividing its ln by the ln of 10.

The ln key is just to the left of the 7 key.

May 10, 2011 | Texas Instruments BA-II Plus Calculator

### How do I find the "Log" key on the TI BA 2 Plus? Not natural log, but to the base of 10

There is no common logarithm key. You can compute the common (base 10) log of any number by using the relationship log(x) = ln(x) / ln(10).

For example, to compute the log of 2, type 2 LN / 1 0 LN =

Dec 14, 2010 | Texas Instruments BA II PLUS Financial...

### How to antilog with TI-84 PLUS

The antilogarithm of natural log [LN] is the exponential [e^x]. It shares the same physical key as [LN] : To access it press [SHIFT][LN]
The antilogarith of the common logarithm (LOG] is [10^x]. It shares the same physical key as the [LOG]: To access it press [SHIFT][LOG]

Aug 28, 2010 | Texas Instruments TI-84 Plus Calculator

### How do I find the log button or how do I use the calculator to calculate a log problem? i.e. (log (learning curve))/(log(2))

The natural log is the LN key, located just to the left of the 7 key.

To calculate the common log, use the relationship log(x) = ln(x)/ln(10).

To calculate the natural log of 3, press 3 LN

To calculate the common log of 3, press 3 LN / 1 0 LN =

Aug 09, 2010 | Texas Instruments BA-II Plus Calculator

### How to find log on a calculator

Since I do not know what Kenko calculator you have I will remain general.

Locate a key marked log (for common decimal logarithm)
Try the two options. One of them is bound to work
1. Enter a positive number and press the key marked LOG.
2. If that does not work, press the LOG key and then enter a positive number. If the calculator displayed log( , with a left parenthesis, insert a right parenthesis before pressing the = key.
To calculate the natural logarithms (LN), look for a key marked with LN and proceed as for the common logarithm. I am sure that the syntax (key sequence) that works for the common log will work for th natural log.

If no key is marked on top of it with LOG or LN, it may be because those markings are ON the body of calculator. In that case the functions are accessed by pressing a key marked SHIFT or 2ND, or 2ndF before the function LOG or LN.

Jun 25, 2010 | Casio FX-260 Calculator

### How can find logarith of a value from Texas Instruments BA 2 plus

The natural log is the LN key, located just to the left of the 7 key.

To calculate the common log, use the relationship log(x) = ln(x)/ln(10).

To calculate the natural log of 3, press 3 LN

To calculate the common log of 3, press 3 LN / 1 0 LN =

Jun 11, 2010 | Texas Instruments BA II PLUS Financial...

### How do i calculate the log to a specific Base?

If you have the latest version of the firmware (2.53) you can use the logBASE function available in the CATALOG. If you don't have the latest firmware, you can get it from http://education.ti.com

Regardless of the firmware version, you can always compute the logarithm to any base by using the relationship

logb(x) = log(x)/log(b) = ln(x)/ln(b)

May 02, 2010 | Texas Instruments TI-83 Plus Calculator

### How to do inverse log on a casio fx 9750g plus

The inverse of a natural logarithm (ln) is the exponetial (e^x). Both share the same physical key [LN] pour ln and [SHIFT] [LN] (e^x) for the exponential.
Syntax is : [ln] 3 [EXE] gives 1.098612289
exponential of 4: [SHIFT][LN] 4 [=] 54.59815003

The inverse of decimmal logarith is raise 10 to a power. Both share tha same physical key [LOG]
log of 6 : [log] 6 [=] result is 0.7781512504
antilog of 0.77: [SHIFT][LOG] 0.77 [=] result is 5.888436554

For more complicated arguments (expressions) it may be a good idea to use parentheses to enclose the arguments of functions.

Mar 29, 2010 | Casio FX-9750GPlus Calculator

### How do i calculate the log of a number?

Hello,
To calculate the natural log of a number use [LN] key. You enter it as
number [LN] [=] exemple 15.32 [LN] [=] gives 2.729150164
To clculate the log base 10 (common logarithm) you use the [LOG] key
15.32 [LOG][=] gives 1.185258765.

Hope it helps

Sep 17, 2009 | Texas Instruments TI-30XA Calculator

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