12 Which of the follawing are equivalent statements?? AqA-rand-qA-r B. pA-rand pv-r C. -qArand -qA-r

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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Hello. I need answers for numbers 12 and 13. mathematics in the modern world. Logic
12 Which of the follawing are equivalent statements??
AqA-rand-q A-r
B. pA-r and pv-r
C.-qArand -q A-r
D. -(q ar) and -a A-r
13. If pA(-pAq) is a sell-contradiction statemont, what is the final truth value of -IpA
(-pAq))?
C. TFTF
D. FTFT
A. TTTT
B. FFFF
Transcribed Image Text:12 Which of the follawing are equivalent statements?? AqA-rand-q A-r B. pA-r and pv-r C.-qArand -q A-r D. -(q ar) and -a A-r 13. If pA(-pAq) is a sell-contradiction statemont, what is the final truth value of -IpA (-pAq))? C. TFTF D. FTFT A. TTTT B. FFFF
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