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Showing Rules are Derived

Practice deriving rules in the 11 rule system by showing and proving rule derivations. Excellent practice material.

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Showing Rules are Derived

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  1. Showing Rules are Derived To show a rule is derived (in the 11 rule system), prove it in that system.

  2. Showing Rules are Derived To show a rule is derived (in the 11 rule system), prove it in that system. This will give you excellent practice with the 11 rule system.

  3. Showing DN (DN) Derivation --A A GOAL (DN) --A A

  4. Showing DN (DN) Derivation --A A -O (DN) --A A

  5. Showing DN (DN) Derivation --A -A PA ?&-? &I A -O (DN) --A A

  6. Showing DN (DN) Derivation --A -A PA -A&--A &I A -O (DN) --A A

  7. Showing DM Derivation of (DM) -(AvB) -A&-B (DM) -(AvB) -A&-B &I

  8. Showing DM Derivation of (DM) -(AvB) -A -B -A&-B (DM) -(AvB) -A&-B GOAL GOAL &I

  9. Showing DM Derivation of (DM) -(AvB) -A B ?&-? -B -A&-B (DM) -(AvB) -A&-B GOAL PA &I -I &I

  10. Showing DM Derivation of (DM) -(AvB) -A B (AvB)&-(AvB) -B -A&-B (DM) -(AvB) -A&-B GOAL PA &I -I &I

  11. Showing DM Derivation of (DM) -(AvB) -A B AvB (AvB)&-(AvB) -B -A&-B (DM) -(AvB) -A&-B GOAL PA vI &I -I &I

  12. Showing DM Derivation of (DM) -(AvB) A AvB (AvB)&-(AvB) -A B AvB (AvB)&-(AvB) -B -A&-B (DM) -(AvB) -A&-B PA vI &I -I PA vI &I -I &I For more click here

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