15/2020 Lab 1 5. Use n = 4 to approximate the value of the integral by the following methods: (a) the trapezoidal rule, and (b) Simpson's rule. (c) Find the exact value by integration. 1 ( 24 3 + 8 ) Ox (a) Use the trapezoidal rule to approximate the integral. needed.) Round the final answer to two decimal places as needed. Round all intermediate values to four decimal places as (b) Use Simpson's rule to approximate the integral. S ( 2X 3 + 6 ) dx x - 1 (Round the final answer to one decimal place as needed. Round all intermediate values to four decimal places as needed (c) Find the exact value of the integral by integration. 2 (2x3 +6) dx= - 1 (Type an integer or a decimal. Do not round.) Find the integral. ( -20-0.6x ) dx