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 cs-312:hw7.5 [2014/12/31 15:57]ringger created cs-312:hw7.5 [2014/12/31 16:25] (current)ringger 2014/12/31 16:25 ringger 2014/12/31 15:57 ringger created 2014/12/31 16:25 ringger 2014/12/31 15:57 ringger created Line 14: Line 14: - ''​What does a good two-column proof look like? ''​ Statements are found in the left column and corresponding justifications for each statement are found on the right. ​ Each statement and reason should be numbered for ease of reference. ​ Each statement must be a mathematical statement that has a truth value. ​ For example, an equation (e.g., ​<​math>​2x+5 = 1​) is either true or not, whereas an expression (e.g., ​<​math>​2x+5​) does not have truth value. ​ Each step must be justified by a reason in the right column. ​ If you cannot provide a clear and convincing reason for a particular statement in your proof, then you need to give the matter further thought and you may consider adding additional steps to improve the argument. + ''​What does a good two-column proof look like? ''​ Statements are found in the left column and corresponding justifications for each statement are found on the right. ​ Each statement and reason should be numbered for ease of reference. ​ Each statement must be a mathematical statement that has a truth value. ​ For example, an equation (e.g., ​$2x+5 = 1$) is either true or not, whereas an expression (e.g., ​$2x+5$) does not have truth value. ​ Each step must be justified by a reason in the right column. ​ If you cannot provide a clear and convincing reason for a particular statement in your proof, then you need to give the matter further thought and you may consider adding additional steps to improve the argument.