if log (x+y/3) = 1/2 log x + 1/2 then prove that x/y + y/x = 7
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log (x+y/3)=logx power1/2+1/2log(10)
log(x+y/3)=log(x power1/2)+log10 power1/2
log(x+y/3)=log(10 x )1/2
x+y/3=10xpower1/2
(x+y/3)square=10x
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