
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
 LinkBack  Thread Tools  Display Modes 
July 1st, 2017, 05:52 AM  #1 
Newbie Joined: Jan 2017 From: Britain Posts: 18 Thanks: 0  Problem with logs
I'm trying to solve this problem which I thought was easy: log52log2+3/2log16 which I thought should be: log 5/2^2 + log16^2/3 so: log 1.25 x log 16^2/3 not sure how to work this out help apprciated 
July 1st, 2017, 06:26 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 17,729 Thanks: 1360 
log5  2log2 + (3/2)log16 = log5  2log2 + 6log2 = log5 + 4log2 = log80

July 1st, 2017, 06:54 AM  #3 
Newbie Joined: Jan 2017 From: Britain Posts: 18 Thanks: 0  Thanks
Forgot that 3/2log16 could become 6log2, so it equals 3/2log 2^4 and you then multiply the exponent in front by 4. Have I explained that correctly? Thanks 
July 1st, 2017, 07:15 AM  #4 
Global Moderator Joined: Dec 2006 Posts: 17,729 Thanks: 1360 
3/2log16 = 3/2log(2^4) = (3/2)*4log2 = 6log2 (An explanation in words, if needed, should clearly explain the above steps.) 

Tags 
logs, problem 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Logs  Can anyone be my teacher for this problem? :)  matisolla  Algebra  2  May 14th, 2015 08:23 AM 
Having some problems understanding logs (natural logs)  leo255  Algebra  4  January 26th, 2014 08:49 AM 
Help on solving problems with logs and natural logs!  rokr32  Algebra  1  February 1st, 2012 03:13 PM 
Square roots and logs problem ..  Sara so  Algebra  5  August 26th, 2010 07:50 PM 
Integration with Natural Logs Problem  Sucker Punch  Calculus  2  June 13th, 2010 12:07 AM 