# Finding lim t->0

urbanist
Hi all,

If we have
$H'(r)=r+\tau(r)H(r)$

and

$\tau(r)=k+(H(r)/r)^a$

where

$a>0, k>0,$ and $H(0)=0$,

can we say anything about ${lim}_{r\rightarrow 0^+}\tau(r)$?

Thanks a lot!