Consider the function f(z) = z² - 5z +6 defined for z ±2. Redefine f so that f is continuous at z = 2. 22-4 z²+1 (z²+z+1-i) z #i 4. Let f(2)= where k is a constant. k, 2=i (a) Find lim f(2) I→i (b) Find value of k where f(z) is continuous at z = i.