The Integer n for which limx→0cosx-1cosx-exxn is a finite nonzero number is _______
L=limx→0cosx-1cosx-exxn =-limx→0 1-cosx1+cosxcosx-ex1+cosxxn = limx→0 sinxx21-cosxx+ex-1xxn-311+cosxIf L is finite nonzero, then n=3 as for n=1,2,L=0, and for n=4, L=∞