On what line of the following proof does the error appear? 1. P₁ P₂ 2. P 3. P₂ 4. 7 P₂ 5. P₂ ^ (P₂) 6. (P₁)→ (P₂ ^ (→ P₂)) 7. (P₁) 8. P₁ 04 8 6 0 3 premise assumption ✓ Elim 1,2 Intro 3 ^ Intro 3, 4 → Intro 2-5 Intro 6 71 7

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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On what line of the following proof does the error appear?
O
O
1.
4
P₁ P₂
2. P
3. P₂
6.
7. (P₁)
8.
8
4. тра
5. P₂ ^ (P₂)
(P₁) (P₂ ^ (P₂))
7
P₁
premise
assumption
✓ Elm 1,2
Intro 3
^ Intro 3, 4
→ Intro 2-5
Intro 6
7
דד
Transcribed Image Text:On what line of the following proof does the error appear? O O 1. 4 P₁ P₂ 2. P 3. P₂ 6. 7. (P₁) 8. 8 4. тра 5. P₂ ^ (P₂) (P₁) (P₂ ^ (P₂)) 7 P₁ premise assumption ✓ Elm 1,2 Intro 3 ^ Intro 3, 4 → Intro 2-5 Intro 6 7 דד
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