Introduction to proofs (4 points)
prove the claim, "x^2 is odd < --> x + 1 is even", where x e z by
proving the following two conditional statements:
(1) prove x^2 is odd -> x + 1 is even
(hint use proof by contrapositive)
(a) (0.5 points) what are you assuming is true:
(b) (0.5 points) what are you proving is true:
(c) (1 point) complete the proof: