let
t = 3, t = 99
log(x) = 3, x = 1000
log(x) = 99 is an extraneous solution
I have a problem, whose solution, apperantly, eludes me.
I have chosen to upload it as a .gif file. The second equation is what I get after the obvious substitution and simplification. This is not correct, the answer is suppsed to be t=3, hence x = 1000, and I fail to find my mistake, which is why I am asking for help.
Thank you.