MAT137Y1 Lecture 3: Lec03
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Enrol in a tutorial, if you haven"t already! Today"s lecture was based on videos 1. 4 1. 6 that have been posted on the course website for mat137. Which of these is a correct description of the set e of even integers: e = {n z : a z, n = 2a} No, n = 6 only when a = 3, not for all integers. So, the set is empty: e = {n z : a z s. t. n = 2a} So this is the set of even integers. Which of these statements is true: a z, the number n = 2a is even. Proof: take a = 1 => n = 2a = 2(1) = 2, which is even: a z s. t. the number n = 2a is even. Also read as there exists a human y who gave birth to all humans x. or. There exists a human y who"s the mother of everyone, which is false.
