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D Question 27 Which inference rule allow us to introduce a new letter to a proof? [1]. conjunction [2]. disjunction [3]. simplification [4). addition O conjnction O disjunction O simplification O addition

D Question 27 Which inference rule allow us to introduce a new letter to a proof? [1]. conjunction [2]. disjunction [3]. simplification [4). addition O conjnction O disjunction O simplification O addition

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question 27 Which inference rule allow us to introduce a new letter to a proof? [1]. conjunction [2]. disjunction [3]. simplification [4). addition conjnction disjunction simplification addition Question 28 Line 3 is a correct application of the rule of Hypothetical Syllogism on lines 1, and 2: 1. (FV V) (T→ S) 2. (T + S) (XV W) 3. (F V V) (X V W) O True False
Transcribed Image Text:Question 27 Which inference rule allow us to introduce a new letter to a proof? [1]. conjunction [2]. disjunction [3]. simplification [4). addition conjnction disjunction simplification addition Question 28 Line 3 is a correct application of the rule of Hypothetical Syllogism on lines 1, and 2: 1. (FV V) (T→ S) 2. (T + S) (XV W) 3. (F V V) (X V W) O True False
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