411 REFERENCE · Wikibooks
Mathematical Proof/Appendix/Answer Key
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This appendix contains all the answers for the book (or, it will once I've finished it). No cheating. Do the problems first and then check your answers. Or you'll get an F.
1.1 Logical Reasoning
1.2 Notation
2.1 Constructive Proof
2.2 Proof by Contrapositive
2.3 Proof by Contradiction
2.4 Proof by Induction
2.5 Counterexamples