Write the negation of each statement. (a) The function f (x) = x 2 – 9 is continuous at x = 3. (b) The relation R is reflexive or symmetric. (c) Four and nine are relatively prime. (d) x is in A or x...

Write the negation of each statement.

(a) The function f (x) = x²
– 9 is continuous at x = 3.

(b) The relation R is reflexive or symmetric.

(c) Four and nine are relatively prime.

(d) x is in A or x is not in B.

(e) If x <>

(f ) If (an) is convergent, then (an) is monotone and bounded.

(g) If f is continuous and A is open, then f^–1(A) is open.