1lim x→0y→2 sin(xy)/x=lim x→0y→2 (xy)/x=lim x→0y→2 y= 22lim x→0y→0 (2-√(xy+4))/xy= lim x→0y→0 (4-(xy+4))/[(xy)·(2+√(xy+4))]= lim x→0y→0 -(xy)/[(xy)·(2+√(xy+4))]= lim x→0y→0 -1/[(2+√(xy+4))]= -1/4