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swimchk13 swimchk13
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A year ago
Consider this proof, (1.) E ⊃ (I ∙ ~ E) (2.)E /∴ ~E (3.) I ∙ ~E (4.) ~E ∙ I (5.) ~E What is the justification for line 4?

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Textbook 
How to Think Logically

How to Think Logically


Edition: 2nd
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julie5julie5
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swimchk13 Author
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A year ago
this is exactly what I needed
annakc
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Yesterday
Smart ... Thanks!
foxrcng11
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2 hours ago
This site is awesome
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