Question about Texas Instruments TI-85 Calculator

# In need to find the natural log of (27/25). What

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

Posted by on

Ad

## 1 Answer

• Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

• Texas Instru... Master
• 7,993 Answers

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

• k24674 Oct 08, 2009

Shoul read: fifth . The log key is for logarithms in base 10, not the natural logarithms.

×

Ad

## 1 Suggested Answer

• 2 Answers

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

## Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video.

×

Loading...

## Related Questions:

1 Answer

### How to use the log fucntion

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 =

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

1 Answer

### How to calculate log

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" "=" .

Mar 29, 2012 | Casio fx-300ES Calculator

1 Answer

### 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

1 Answer

### I need help with the fx-115 ES on how to find what to hit to input calculation for antilog

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

1 Answer

### What key do I need to press to put in expontenial and logarithmic functions?

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.

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

3 Answers

### Where can i find the log key in casio FC-200v 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.

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

1 Answer

### Not sure how to do logs on the this 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

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

1 Answer

### 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

1 Answer

### 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

1 Answer

### 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...

## Open Questions:

#### Related Topics:

121 people viewed this question

## Ask a Question

Usually answered in minutes!

Level 3 Expert

102366 Answers

Level 3 Expert

7993 Answers

Level 2 Expert

262 Answers

Loading...