Question about Casio FX-115ES Scientific Calculator
Your calculator knows only the decimal logarithms log or log_10 and the natural logarithms (ln or log in base e).
So you cannot compute directly the logarithms in any bases other than 10 and e.
A workaround consists in using the relation
log in base b of a number a (log_b (a))
log_b(a)= (log_10(a) ) / (log_10 (b))
or the relation
log_2(0.3)=log(0.3)/log(2) where log is log in base 10
As to the multiplicative factor you had at the beginning of your expression, just multiply the value obtained by one on the formulas above (both formulas will give the same result) by 0.3
Posted on Jul 24, 2010
For fx 991ms users finding log 2 base 1024 press log1024 divided by log2.......
Posted on Feb 21, 2013
For fx-991ms users in finding 0.3 in base two you press log 0.3 divided by log 2(log 0.3/log ).
Posted on Mar 05, 2012
a 6ya Technician 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 repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 03, 2015 | Casio Office Equipment & Supplies
Jan 23, 2014 | Casio FX-300MS Calculator
Jun 11, 2012 | Casio FX-115MS Plus Calculator
Nov 01, 2009 | Casio FX-300MS Calculator
Oct 06, 2009 | Casio FX-300MS Calculator
Dec 08, 2007 | Casio FX-300MS Calculator
7,352 people viewed this question
Usually answered in minutes!