4. The following are the proofing steps of an argument in formal reasoning. In proofing step 5, what should be Z? * 1. Vx[P(x) → Q(x) 2. ЗуР(у) 3. Р(а) 4. Р(а) — Q(а) 5. Z P P 2, EI 1, UI 3,4, MP O A. Q(a) В. Р(а) С. заР(a) O D. vaQ(a)

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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4. The following are the proofing steps of an argument in formal reasoning. In
proofing step 5, what should be Z? *
1. Vx[P(x) → Q(x)
2. ЗуР(у)
3. Р(а)
4. Р(а) — Q(а)
5. Z
P
P
2, EI
1, UI
3,4, MP
O A. Q(a)
В. Р(а)
С. заР(a)
O D. vaQ(a)
Transcribed Image Text:4. The following are the proofing steps of an argument in formal reasoning. In proofing step 5, what should be Z? * 1. Vx[P(x) → Q(x) 2. ЗуР(у) 3. Р(а) 4. Р(а) — Q(а) 5. Z P P 2, EI 1, UI 3,4, MP O A. Q(a) В. Р(а) С. заР(a) O D. vaQ(a)
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