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Help.

 
NotSoSmart  Jan 14, 2018
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53x  =  900  take the log of both sides

 

log 53x  =  log 900      and we can write

 

(3x)  log 5  =  log 900     

 

x  (3log 5)  = log 900     divide both sides by 3log 5

 

log (900) /  [ 3log (5) ]  ≈ 1.41

 

 

 

ln 3 +  ln (4x)  =  4    we can write

 

ln (3*4x)  =  4

 

ln (12x)  =  4

 

This says that

 

e^4  =  12x         divide both sides by 12

 

e^4 / 12  = x ≈  4.55

 

 

cool cool cool

 
CPhill  Jan 14, 2018

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