/sci/ - Science & Math

>>	Anonymous Tue Mar 1 01:17:51 2011 No.2623506 [View] File: 84 KB, 588x720, 1298184004611.jpg [View same] [iqdb] [saucenao] [google] when people dont know the fucking subjunctive tense. also related: when my english teacher uses incorrect grammar. fucking bitch.

Anonymous Wed Feb 23 03:23:07 2011 No.2589771 [View]
File: 84 KB, 588x720, 1298184004611.jpg [View same] [iqdb] [saucenao] [google]

1. P & Q given
2. (P & Q) > P valid schema
3. P modus ponens from 1 and 2
4. ~P given
5. ~P > ( ~R > ~P) valid schema
6. ~R > ~P modus ponens from 4 and 5
7. P > R modus tollens from 6
8. R modus ponens from 3 and 7

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/sci/ - Science & Math

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