Approximate the value of the given integral by completing parts {a} and {b} below. {a} Use the trapezoidal rule, using n = 4. {b} lllhecl'; by direct integration. 2 Idxzdx I] {a} Use the trapezoidal rule to approximate the integral. 2 14;?de I] [Type an integer or a decimal} {b} Find the exact value of the integral by integration. iiixzdx= E {Type an integer or decimal rounded to two decimal places as needed}