
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
June 26th, 2018, 02:40 AM  #1 
Newbie Joined: Jul 2016 From: pakistan Posts: 18 Thanks: 0  How to find logarithm of a number having negative characteristic.
Hi, can anybody help me find logarithm of a number having negative characteristic? For example, log(0.00462). Any help would be highly appreciated. Thanks. Last edited by skipjack; June 26th, 2018 at 03:11 PM. 
June 26th, 2018, 05:06 AM  #2 
Senior Member Joined: Sep 2015 From: USA Posts: 2,500 Thanks: 1372 
$\log_{10}(10^k x) = \log(x) + k$ so for example I assume you can find $y=\log(4.62)$ where in this case $k=3$ then $\log(0.00462) = y  3$ 
June 26th, 2018, 08:40 AM  #3 
Newbie Joined: Jul 2016 From: pakistan Posts: 18 Thanks: 0 
I don't understand $ and euro currency sign. For which purpose they are used here, I don't understand your answer. Thanks for your reply. though. I can find all kinds of logs, but not logs having negative characteristics, e.g. log(0.00462) and log(.5143). It's easily found using a calculator, but I want to find it manually. Any help would be highly appreciated. Thanks. Last edited by skipjack; June 26th, 2018 at 03:08 PM. 
June 26th, 2018, 09:04 AM  #4 
Senior Member Joined: Sep 2015 From: USA Posts: 2,500 Thanks: 1372  Is that any better? Your browser isn't rendering the LaTex. 
June 26th, 2018, 09:33 AM  #5 
Newbie Joined: Jul 2016 From: pakistan Posts: 18 Thanks: 0 
Simply tell me how log(0.00462)=2.3354 and log(.5143)=.288791

June 26th, 2018, 09:57 AM  #6 
Senior Member Joined: Feb 2010 Posts: 707 Thanks: 142  
June 26th, 2018, 10:25 AM  #7 
Newbie Joined: Jul 2016 From: pakistan Posts: 18 Thanks: 0 
Now I understand. I have solved other problems like this. Thanks.
Last edited by skipjack; June 26th, 2018 at 03:11 PM. 

Tags 
characteristic, find, logarithm, negative, number 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Intrinsic characteristic of prime number  moussaid521  Number Theory  10  December 2nd, 2016 10:17 AM 
Negative logarithm problem?  Tangeton  Calculus  3  June 7th, 2015 09:37 PM 
Negative number squared  scarecr0w132  Elementary Math  3  February 24th, 2014 08:19 AM 
Find the number nonnegative integer solutions to the equati  wonderwall  Number Theory  7  April 23rd, 2012 12:42 PM 
Difference between a negative number and decimal number?  zain  Elementary Math  2  April 26th, 2008 01:07 PM 