FindRoot and evaluation control
- To: mathgroup at smc.vnet.net
- Subject: [mg98485] FindRoot and evaluation control
- From: LMZ <sashulika at gmail.com>
- Date: Fri, 10 Apr 2009 04:59:03 -0400 (EDT)
Good day,
help me please with good advice about the problem below.
need to solve equation (Eigenvalues can not be calculated
symbolically):
FindRoot[x==Eigenvalues[hamiltonM/.{a->-103., b->600., j->75., jE-
>75., tau->x}][[1]],{x,-1}]
got errors:
"Eigenvalues::eival: Unable to find all roots of the characteristic
polynomial."
thanks for your help and time, Alexandr.