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Unformatted text preview: 2 x = 6 a proposition, even though its truth value (true or false) depends on the value of x . Some sources differ. Definitions are essentially if and only if statements. For example, a number is a rational number if and only if it can be written in the form: integer nonzero integer True if and only if statements arise when an if-then statement and its converse are true....
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This document was uploaded on 12/29/2011.
- Spring '09