PART A: Well-Formed Formulas? Which of the following are well- EXERCISE 9.1 formed formulas (WFFS)? Which are not? 1. (x)Ax 19. (x)((Fx v Gx)→ Hx) 20. (Q• (Rg v (x)Ex)) 21. (3x)Ba * 10. (3z) (Sx • Rz) 2. (x)(Ax) 11. (Ju)Gu 3. ~(3y)By 12. (w)(~Dw) 4. (a)Ca 13. (P • (x)Fx) 22. (z)M 23. (3y)Gx 24. (3x)(3x)Fx 5. (z)~Tz 14. (x)Gx (x)Nx) 6. (~x)Hx 7. ~(x)~Jx 15. (y) (My → ~Oy) * 25. (y)(3x)Sxy 16. ~b 17. (y)(Hy v (3y)Fy) 18. (y)Ry v (3z)~Sz) 8. Cx 9. (z)P~z

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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cludes a free
PART A: Well-Formed Formulas? Which of the following are well-
EXERCISE 9.1
formed formulas (WFFS)? Which are not?
1. (x)Ax
圣
* 19. (x)((Fx v Gx) Hx)
20. (Q • (Rg v (x)Ex))
10. (3z) (Sx • Rz)
2. (x)(Ax)
3. ~(3y)By
11. (3u)Gu
12. (w)(~Dw)
21. (3x)Ba
4. (a)Ca
* 13. (P
* 22. (z)M
• (x)Fx)
14. (x)Gx → (x)Nx)
5. (z)~Tz
6. (~x)Hx
7. ~(x)~Jx
23. (3y)Gx
24. (3x)(3x)Fx
* 25. (y)(3x)Sxy
15. (y)(My → ~Oy)
16. ~b
17. (y)(Hy v (3y)Fy)
18. ((y)Ry v (3z)~Sz)
8. Cx
9. (z)P~z
Transcribed Image Text:cludes a free PART A: Well-Formed Formulas? Which of the following are well- EXERCISE 9.1 formed formulas (WFFS)? Which are not? 1. (x)Ax 圣 * 19. (x)((Fx v Gx) Hx) 20. (Q • (Rg v (x)Ex)) 10. (3z) (Sx • Rz) 2. (x)(Ax) 3. ~(3y)By 11. (3u)Gu 12. (w)(~Dw) 21. (3x)Ba 4. (a)Ca * 13. (P * 22. (z)M • (x)Fx) 14. (x)Gx → (x)Nx) 5. (z)~Tz 6. (~x)Hx 7. ~(x)~Jx 23. (3y)Gx 24. (3x)(3x)Fx * 25. (y)(3x)Sxy 15. (y)(My → ~Oy) 16. ~b 17. (y)(Hy v (3y)Fy) 18. ((y)Ry v (3z)~Sz) 8. Cx 9. (z)P~z
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