Question 1006102
There is no closed form solution to this...from
9*x*3^(x-1)=81 we can divide by nine and get
{{{x*3^(x-1) = 9}}}  and
{{{(x*3^x)/3 = 9}}}
{{{x*(3^x) = 27}}}
Digitally the answer for x is about 2.258...
I suspect there is an error in the problem...