given. int 0^2 2 root4(4+x^3)dx, n = 8 do the following. (round your answer to six decimal places.) (a) use the trapezoidal rule to approximate the given integral with the specified value of n. (b) use the midpoint rule to approximate the given integral with the specified value of n. (c) use simpson's rule to approximate the given integral with the specified value of n