Question 901703

{{{(1+x^2)/(x^2)=3^y}}}

{{{1+x^2=3^y*x^2}}}
{{{3^yx^2-x^2=1}}}
{{{x^2(3^y-1)=1}}}
{{{x^2=1/(3^y-1)}}}
{{{x=0 +- sqrt(1/(3^y-1))}}}