1.lim xcotx = lim x/tanx =1x→0 x→02.lim (1+Xˆ3)/2Xˆ3= lim (3Xˆ2) /(6Xˆ2)=1/2x→∞ x→∞3.lim (eˆX+1)/X = lim eˆX = eˆ2x→2 x→2