Saturday 22 June 2013

How to calculate log base 2 using a scientific calculator?

Our scientific calculator actually has 2 buttons are for Logarithm calculation, [see the photo]

1. "log" button: is to calculate log base 10 (known as Common Logarithm)
2. "ln" button: is to calculate log base e (known as Natural Logarithm)



Now to calculate log base 2, you can use any of these two, just that you will need to convert it into base 2.

You can do this by dividing your result by the "log" or "ln" of base 2. 

Let me give an example for each case.

Example:
If you to calculate log(x) base 2, then calculate log(x) base 10 then divide it by log2.
Or,
to calculate ln(x) base 2, do it with base 10 then divide it by ln2.

Calculation example:
log8 base 2 is 3. using calculator is should be log8 base 10 / log2.


Thank you :)
by Hasin Arefin Khan

64 comments:

  1. great idea, thanks buddy

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  2. Man you just save me

    Also correct some language written.

    Thank you

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    Replies
    1. happy to help, pa'ji :)
      but what to correct?

      Delete

    2. "You can do this by dividing your result by the "log" or "ln" of base 2" ...should be "You can do this by dividing your result by the "log" or "ln" of 2 (not base 2)

      Delete
  3. ahh thanks for all the detail man

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  4. This comment has been removed by the author.

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  5. Thank You bro, You awesome !

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  6. Thank you 4 ur awesome answer

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  7. that was a just a logarithm property what you did. Tell us how to make that base as 2... instead of base 10.

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  8. its very good and ease method to find log base 2..Really very helpful

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  9. That ws really helpful thanx a lot mate

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  10. Feel free to make request of any queries, thanks to you all :)

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  11. Thanks man you Rock !!!

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  12. that was the clearer than anything I found on other sites. man you should post more often.

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    Replies
    1. Do help me with more problems. Mail me or post problems here, I will do my best :).

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  13. Thank u sir.... For such a need full help with any greediness... I am appreciating ur work ... Again thank u very much sir

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  14. Replies
    1. calculate log(x) base 2, then calculate log(x) base 10 then divide it by log2 or to calculate ln(x) base 2, do it with base 10 then divide it by ln2.

      Delete
  15. Thank you bosss... it's really helpful..

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  16. You could do it very simply. ON fx-82 MS
    Log2(101) = log 101 / log 2 = 6.65

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  17. I m not getting ans of log40 to the base 2

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  18. omg my dumb ass wasnt trust u at first im sorry sir, thank u sm :')
    Have a good day!

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    ReplyDelete