4. Integral Approximation. For each value of x, its corresponding value of ) is given in the table below 3.2 a. Use the Trapezoidal Rule and the following data to estimate the value of the integral y dx X 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 V 4.9 5.4 5.8 6.2 6.7 7.0 7.3 7.5 8.0 8.2 8.3 8.3 b. If it is known that -1 f"(x)