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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)?

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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

  • k24674 Oct 08, 2009

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

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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 =

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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" "=" .

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How do i give the value of log


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

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

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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 =.

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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.

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

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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:
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To calculate the natural log of 3, press 3 LN

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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
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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.

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

To calculate the natural log of 3, press 3 LN

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