I need help finding the right answer to the below question. The question is directly translated from Danish, so I hope that it has been correctly translated.
For a discrete model in a vaiable Nt+1=f(Nt) one of the equilibriums are N`=100. If f'=(N)=-1-1, it is certain that at equilibrium point is :
a) locally stable b) globally stable c) unstable d) none of the above