A Determine whether the following functions are continuous at a given point. Show your complete solution. 1. f(x) = 3x2 - 4x + 2 atx = 2 2. f(x) = x2 -6x - 3 at x = 4 3. f (x) = X-4 - at x = 5 B Determine whether the following functions are continuous on the given interval. Show your complete solution. 1. f(x) = v4 - x2 ; [-2.2] 2. f(x) = 3x2 - x +5; (-0, +00)