Discrete Structures/Math

Problem 6: Proofs (15 points) are real numbers, then r>1 or u> 1. a proof by contraposition, and (2) a proof by contradiction. bers, then y (a) Use a proof by contraposition to show that if x+y2 2, where x and y (b) Prove that if n is an integer and 3n 2 is even, then n is even using (1) ( c) Prove the triangle inequality, which states that if x and y are real num - y where x represents the absolute value of x, which equals x if x 2 0 and equals -r if r