Question about Texas Instruments TI-85 Calculator

In need to find the natural log of (27/25). What keys do I need to press? Is it log (27/25)?

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Hello,

Use the [LN] key, the fith key from the bottom, on the first row left to [EE] key

[LN] ( 27/25) [ENTER] . Make sure you put the fraction inside parentheses to prevent the calculator from interpreting it as LN(27)/25.

Hope it helps.

Posted on Oct 08, 2009

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Posted on Jan 02, 2017

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To calculate the natural logarithm of a number, enter the number and press the LN key. To calculate the natural logarithm of a calculated result, simply press the LN key.

To calculate the natural logarithm of 3, press 3 LN

To calculate the logarithm to any other base, calculate the natural logarithm and then divide by the natural logarithm of the base.

To calculate the base-10 logarithm of 3, press 3 LN / 1 0 LN =

To calculate the natural logarithm of 3, press 3 LN

To calculate the logarithm to any other base, calculate the natural logarithm and then divide by the natural logarithm of the base.

To calculate the base-10 logarithm of 3, press 3 LN / 1 0 LN =

Apr 04, 2012 | Texas Instruments BA-II Plus Calculator

For the common logarithm use the "log" key. For the natural logarithm use the "ln" key. Both keys are located near the upper-right corner of the keyboard.

To calculate the common logarithm of 3, press "log" "3" "=" . For the natural logarithm of 3, press "ln" "3" "=" .

To calculate the common logarithm of 3, press "log" "3" "=" . For the natural logarithm of 3, press "ln" "3" "=" .

Mar 29, 2012 | Casio fx-300ES Calculator

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 =

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

Use the shifted function of the appropriate log key (log for common (base 10) log/antilog and ln for natural (base e) log/antilog). For example, to calculate the common antilog of 2, press SHIFT log 2 = and to calculate the natural antilog of 2, press SHIFT ln 2 =.

Apr 09, 2011 | Casio FX-115ES Scientific Calculator

The exponential function and the natural logarithm (LN) are inverse of one another. They share the same physical key. To calculate the natural log [LN] press the key marked LN and enter the number. Close the parenthesis) and press [=]

To calculate the exponential, use the key combination [SHIFT][LN] followed by the number.

To calculate the exponential, use the key combination [SHIFT][LN] followed by the number.

Feb 25, 2011 | Casio FX-115ES Scientific Calculator

There isn't one. You can calculate the common log by using the relationship

log(x) = ln(x) / ln(10)

That is, calculate the number's natural log and divide it by the natural log of 10. The natural log is the shifted function of the 8 key.

log(x) = ln(x) / ln(10)

That is, calculate the number's natural log and divide it by the natural log of 10. The natural log is the shifted function of the 8 key.

Feb 01, 2011 | Casio FC-200V Scientific Calculator

For common logarithm use the LOG key just below the blue 2nd key. For natural logarithm use the LN key just below the LOG key.

In either case, press the appropriate key, then type in the expression whose log you want, then the ) key. Type in whatever else there might be in the total expression, then the ENTER key.

For example, to calculate the natural log of 2:

LN 2 ) ENTER

In either case, press the appropriate key, then type in the expression whose log you want, then the ) key. Type in whatever else there might be in the total expression, then the ENTER key.

For example, to calculate the natural log of 2:

LN 2 ) ENTER

Aug 16, 2010 | Texas Instruments TI-30 XIIS Calculator

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 =

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

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

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.

Locate a key marked log (for common decimal logarithm)

Try the two options. One of them is bound to work

- Enter a positive number and press the key marked LOG.
- 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.

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

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 =

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...

Apr 03, 2014 | Texas Instruments TI-85 Calculator

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