Rewrite each of the following statements so that it is clear that each is an implication.(...

Rewrite each of the following statements so that it is clear that each is an implication.

(a) [BB] The reciprocal of a positive number is positive.

(b) The product of rational numbers is rational.

(c) A differentiable function is continuous.

(d) [BB] The sum of the degrees of the vertices in a graph is an even number.

(e) [BB A nonzero matrix is invertible.

(f) The diagonals of a parallelogram bisect each other.

(g) All even integers are negative.

(h) Two orthogonal vectors have dot product 0.

(i) is not an integer for any integer n.

(j) n + 3 > 2 for every natural number n.