D Question 1 1 pts The following table gives some values of the continuous function f(a). Using this table, compute an approximation to So f(x) da using n = 4 subintervals and the left endpoint method. You may use a calculator. f (ac) O 0.25 4 0.5 4 0.75 2 1 0 1.25 -0.5 1.5 -2 1.75 -1.5 2 -1