this is a exam pratice, but the solution is not offered. i want a standard answer.

3. How would you \"remove the discontinuity\" of f ? In other words, how would you dene f (2) in order to make f continuous at 2? 51:3 8 fox) $2 _ 4 4. Suppose f is dened by sin(k3:) x , :1: 0 (a) Find all k such that lim f (36) exists. sic)0 (b) Find all m such that f is continuous on [0, 10]. (c) For k, m from above, is f continuous on RT\