Evaluate the upper and lower sums for f (x) = 2 + sin x, 0 ≤ x ≤, with n = 2, 4, and 8

[Dhanalakshmi]

Evaluate the upper and lower sums for f (x) = 2 + sin x, 0 ≤ x ≤, with n = 2, 4, and 8. Illustrate with diagrams like Figure 14.