That is also what I have thought. I think the question is wrongly set because I was using the slider in GeoGebra without which I got no where to go.
But I when tried putting a=3, just an arbitrary one, I could not figure out.
1. I hit this logarithm mathematics problem.2. (1/3)^x = log<a>x
For clarifications, <a> means the base a
3. I have used GeoGeBra to graph them and managed to find the intersection.
But is there a solution for the exact value(s) of x?