6 6. Estimate / $2dcc using a right Riemann sum with 3 rectangles. Then estimate it with 0 a left Riemann sum with 3 rectangles. Which estimate is closer to the true value? Optional: How could you have known this ahead of time from the function? cosw (sin 1:)\" converge or diverge when a = 1/2? If it converges, compute its value; if it diverges, explain why. 17/2 7. For what values of a is the integral f dsc improper? Does the integral 0 8. Does / e'mzdac converge or diverge, and why? 2 Hint: Compare it to a similar improper integral that you are actually able to antidif ferentiate