Determine whether or not each set is compact and whether or not it is convex.

Use the sets from Exercise 3.

Data From Exercise 3

Determine whether each set is open or closed or neither open nor closed.

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a. {(x, y):y> 0} b. {(x, y): x = 2 and 1 ≤ y ≤ 3} c. {(x, y): x = 2 and 1 < y < 3} d. {(x, y): xy = 1 and x > 0} e. {(x, y): xy ≥ 1 and x >0}