Ex.1b page 75 Determine whether the function f is continuous at c b ) f (I ) = 2x+1 if x50, C = 0; 2x if I > 0, Ex.2 a.b page 75 I The function f is not defined at c. For each function, decide how to define f(c) so that f is continuous at c: a) f(I ) = x4- 16 C = 4; x - 4' 2x if x > 1, b) f(x) = c = 1; 1+z if a