is f(x) continuous at x=3?

Question

f(x)=

1. x^2 + 1, x<3
2. 9 , x=3
3. 4x-1, x>3

Answer 1

f(3) = 9;

lim f(x) as x→3^- = 9 + 1 = 10 ≠ 9

So, f(x) discontinuous at x = 3