>>191
方針は正しいけど計算が間違ってるな。
(a^t)*log(a)=1
a^t=1/log(a)
tlog(a)=-log(log(a))
t=-log(log(a))/log(a)

>>200
a^t=tに代入すると
1/log(a)=-log(log(a))/log(a)
log(log(a))=-1
log(a)=1/e
a=e^(1/e)