In Exercises 13, use a graphing utility to graph the function and approximate the limit (if it exists). Then find the limit (if it exists) algebraically by using appropriate techniques. .x21 x2+5x3 . JE2 L .r11>n12 2x 2.}1{3 l x 3. .1112 x 5 In Exercises 4 and 5, use a graphing utility to graph the function and approximate the limit. Write an approximation that is accurate to four decimal places. Then create a table to verify your limit numerically. sin 3x _ e--" l 4. lim .190 x _v>U x 6. Find a formula for the slope of the graph off at the point (x,f(x)). Then use it to nd 4.'I__ _I_.__ _4...I__ _.___'.I.'"._.I.__