5. (10 points, plus 5 extra credit) Use n = 4 subintervals to approximate the following integral: via the left endpoint method, the right endpoint method, the trapezoid method, the midpoint method, and Simpson's rule. Do not simplify any of these summations, but write the terms of each summation clearly (and be sure to specify which is which)! For 5 points (total) of extra credit, identify which of the four methods above (ex- cluding Simpson's rule) overestimate the integral and which underestimate it (justify your answers)