MATH 220 Midterm: MATH 220 TAMU 220-Fall 03 Exam 2
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1. (a) statement (b) open sentence; you could write for all real numbers a, b, and c, if a > b and. > c, then a > c. answers may vary: could use integers instead of real numbers, etc. (c) open sentence; you could write for all real numbers a and b, if a 6= b, then a2. B2 a b = a + b. it is important to point out that a 6= b in order for this to be a true statement. Another correct answer would be one of the form for all real numbers a and b, if a = 5 and b = 3, then a2. B2 a b = a + b. (d) neither (e) statement. 2. (a) there exists an integer x so that x is even and x+1. X z so that x is even and x+1.
