1. Prove by cases that if x is an integer, then x + 5x - 1...

 

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1. Prove by cases that if x is an integer, then x + 5x - 1 is odd. 2. Prove by cases that for every integer n, n >n. 3. Prove that if x and y are integers such that x (y + 5) is odd, then x is odd and Y is even. For this one, use the contrapositive first, and then prove that by cases. 1. Prove by cases that if x is an integer, then x + 5x - 1 is odd. 2. Prove by cases that for every integer n, n >n. 3. Prove that if x and y are integers such that x (y + 5) is odd, then x is odd and Y is even. For this one, use the contrapositive first, and then prove that by cases.

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1 Prove by cases that if x is an integer then x 5x 1 is odd Let x be an integer Case 1 x is even If ... View the full answer