Limit[z^n/(1-z), n->Infinity].
help me out plz
Thanks Daniel Regards
Put an assumption on the magnitude of z.
z
Limit[z^n/(1-z), n->Infinity, Assumptions->Abs[z]<1] (* Out[2]= 0 *) Limit[z^n/(1-z), n->Infinity, Assumptions->Abs[z]>1] (* Out[3]= ComplexInfinity *)