Answers

  • Brainly User
2015-10-28T18:25:16+05:30
F(x) = 12 when x is an integer.
     = -7 when x is not an integer.

f(9) = 12 9 is an integer
f(9-) = -7  9- is something which is slightly less than 9 so it is not an integer
f(9+) = -7 as 9+ is something which is slightly more than 9, so it is not an integer

So  f(9-) ≠ f(9) ≠ f(9+), f(x) is not continuous at x=9.
0