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Help.

NotSoSmart  Dec 28, 2017
 #1
avatar+86888 
+2

73x  = 400    take the log of both sides

 

log 7 3x  =  log 400      and we can write

 

3x  *  log 7  =  log 400          divide both sides by 3log 7

 

x  =  log (400)  / [ 3log (7)]  ≈ 1.026  =  1.03

 

 

ln  (4)  + ln (3x)  = 2     we can write

 

ln  ( 4 * 3x)  = 2

 

ln (12x )   =  2

 

This says that

 

e^2  =  12x            divide both sides by 12

 

e^2  / 12 =   x   ≈  .615  =  .62

 

 

 

cool cool cool

CPhill  Dec 28, 2017

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