Saturday, June 15, 2013

Please solve... 1.4(3.2)^x = 3(1.9)^(3x)


%0D%0A1.4%283.2%29%5Ex+=+3%281.9%29%5E%283x%29%0D%0A 


Rearranging gives us: 

%0D%0A%283.2%2F1.9%5E3%29%5Ex+=+3%2F1.4%0D%0A 



%0D%0Alog%28%283.2%2F1.9%5E3%29%5Ex%29+=+log%283%2F1.4%29%0D%0A 

%0D%0Ax=log%283%2F1.4%29%2Flog%28%283.2%2F1.9%5E3%29%29%0D%0A 

which is about -0.999645 (i.e. -1) 
:)
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