(c) Use the ideas generated in part (b) to give an upper bound for the integral, that estimates the integral with an error no greater than 0.1. Justify your answer. How many subintervals were needed? (d) Using the same type of reasoning developed in part (b), nd a lower bound for the integral ft? cos (3:2) d3: with an error no greater than 0.1. Justify your answer. How many subintervals were needed? 2. Using ideas similar to the preceding problem, approximate the value of 4 /\\/|x2533+6| d3: 0 with error no greater than 0.4. Indicate how many subintervals you use in your approximation. Explain your reasoning. *Note that this problem can be loaded in rsumtool using the button \"Example3.\