
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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December 11th, 2018, 11:01 PM  #1 
Banned Camp Joined: Dec 2018 From: vryry Posts: 17 Thanks: 0  How to solve this
Hello sir How to solve this (1+a/b)^x = z/y 
December 12th, 2018, 12:14 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 21,028 Thanks: 2259 
For which variable?

December 12th, 2018, 12:22 AM  #3 
Banned Camp Joined: Dec 2018 From: vryry Posts: 17 Thanks: 0 
Hello sir How to solve variable x 
December 12th, 2018, 12:44 AM  #4 
Global Moderator Joined: Dec 2006 Posts: 21,028 Thanks: 2259 
x = ln(z/y)/ln(1 + a/b)

December 12th, 2018, 02:05 AM  #5 
Banned Camp Joined: Dec 2018 From: vryry Posts: 17 Thanks: 0 
Hello sir Then what to do next step after natural log 
December 12th, 2018, 02:28 AM  #6 
Senior Member Joined: Dec 2015 From: somewhere Posts: 727 Thanks: 98 
Just add the logarithm to both sides

December 12th, 2018, 03:19 AM  #7 
Banned Camp Joined: Dec 2018 From: vryry Posts: 17 Thanks: 0 
x = ln(z/y)/ln(1 + a/b) how to remove log ln 
December 12th, 2018, 03:33 AM  #8 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,968 Thanks: 1152 Math Focus: Elementary mathematics and beyond 
$\displaystyle x=\log_{1+\frac ab}\left(\frac zy\right),\quad\frac ab>0$
Last edited by greg1313; December 12th, 2018 at 04:31 AM. 
December 12th, 2018, 07:09 AM  #9 
Global Moderator Joined: Dec 2006 Posts: 21,028 Thanks: 2259  
December 12th, 2018, 09:46 PM  #10 
Banned Camp Joined: Dec 2018 From: vryry Posts: 17 Thanks: 0 
Hello sir How it is solved how the power are transferred (1+r/12)^6×5662=5774 (1+r/12)^6=5774/5662 1+r/12=(5774/5662)^1/6 

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