This document contains 5 limit calculation problems: 1) Finding the limit as x approaches infinity of the fraction x5-2x4+3x2-2 over 3x5-2x+1. 2) Finding the limit as x approaches 2 of the difference of two fractions. 3) Finding the limit as x approaches 1 of the difference of two fractions. 4) Finding the limit as x approaches 4 of the fraction x-4 over 1-√x-3. 5) Finding the limit as x approaches 1 of the fraction x2-5x+4 over x3-1.