I saw this equation somewhere :
$ T\left(n\right)=\sqrt{nT\left(\sqrt n\right)+100n}$
and I have really no idea how to solve it. clearly, it can not be solved using Master Theorem directly. also I have no idea about any suitable substitution $ m = f(n) $. the recursive tree is also not obvious for me.
I will be really thankful if anybody help me solving this equation.(Or just give me some hints and primary steps).