(limits) sandwich theorem -- lim x approaches 0 of xcos(x) 1. The problem statement, all variables and given/known data Use the sandwich theorem to find: lim as x approaches 0 of xcos(x). 2. Relevant equations I know that the range is between -1 and 1 -1<xcos(x)<1 3. The attempt at a solution -1(x)<xcos(x)<1(x)??? Then what do i do? i think the answer is 0, but i figured that out by graphing, i need to find it analytically. please help!