a) x→-2 limf(x)=[(-2)²-(-2)-1]/[-2+1)=(4+2-1)/(-1)=5/)-1)=-5
b)x→-∞ limf(x)/(x²-x-1)=lim (x²-x-1)/(x+1)*1/(x²-x-1)=lim1/(x+1)=0
c)Ecuatia asimptotei y=mx+n
m=limf(x)/x=lim (x²-x-1)/x*(x+1) ptx→∞
m=lim(x²-x-1)/)x²+x)=1 grd numitorului = grd numarator ,se face raportul coeficientilor
n=lim(f(x)-mx)=lim(x²-x-1)/(x+1)-x) x→∞
n=lim(x²-x-1-x²-x)/(x+1)=lim(-2x-1)/(x+1)=-2
y=x-2
