Question about Sharp EL-531VB Calculator

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How do i perform the calculation of log (base 2) 8? The answer should be 3....that is it is the inverse calculation of 2 cubed =8. Can any one help with the log calculation?

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  • Anonymous Mar 17, 2014

    Hit mode and dec foe base 10 and all I get is the #8. Appears mode is not working. I have 2 of these calculators and they both have the same problem

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Yes look you can't enter the base in calculators it's default 10 so use:
log x base y = log x / log y
log (x*y) = log x + log y
log (x/y) = log x - log y
so instead of log 8 base 2 input log 8 / log 2 it's easy
hope you understand :)

Posted on Jul 06, 2009

  • Phil
    Phil Apr 16, 2014

    Yes thanks. For the EL735S, using your example, the buttons are: Mode 1 4 2ndF log 8 = .90309. Then 2ndF CA then 2ndF log 2 = .30103. Using these two results: .90309 div by .30103 = 3. Correct.

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Change the base of the problem from 2 to io by the formlae:
log(base10) 2 and divide this by log(base 10) 8

now get them divided and take the antilog of the no. u get after dividing them.........

the no. u got after obtaining the antilog is ur ans....

BE CLEAR ABOUT THE QUESTION U WANT TO ASK!!!!!!!!!!

Posted on Sep 01, 2009

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Posted on Jan 02, 2017

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