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Unit 2: Building on the Basics

Only If, and Necessary and Sufficient Conditions

2.1 Intro to Symbolizing Only if, nec., and suff.

2.1 Answers for 2.1

Exercises

Proofs: Using →in

2.3 Answer for #3

2.3 Answer for #21

2.3 Answer for #32

2.3 Answer for #33

Exercises

  • None at this time

Symbolizing Negations (~)

2.6 Answers

2.9 Answers

    Exercises

    Proofs Using ~in and ~out

    2.10 Answer for #10

    2.10 Answer for #19

    2.10 Answer for #20

    2.10 Answer for #22

    2.10 Answer for #24

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    Exercises

    • None at this time

    Proofs Using “Prove an Antecedent“

    2.12 Answer for #3

    2.12 Answer for #7

    2.12 Answer for #11

    Exercises

    • None at this time

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