8. {(Vx)(Fx ɔ ¬Gx), (Vx)(Fx A Hx)}/ .. (3x)¬Gx

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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In each of the following construct a derivation in CEL of the conclusion from the premises.
6. {(Vx)(Vy)[(FXAGY) ɔ Hxy], (3xr)(3y)[FXA¬FY)^¬Hxy]}
1:. (3x)(-FxA -Gx)
8. {(Vx)(Fx ɔ -Gx), (Vx)(Fx ^ Hx)}/ .. (3x)¬Gx
11. -(Vx)¬Fx/.. (Ex)Fx
15. (3x)[Fx ɔ (3y)Gy]/ .'. (Vx)Fxɔ (3x)Gx
Transcribed Image Text:In each of the following construct a derivation in CEL of the conclusion from the premises. 6. {(Vx)(Vy)[(FXAGY) ɔ Hxy], (3xr)(3y)[FXA¬FY)^¬Hxy]} 1:. (3x)(-FxA -Gx) 8. {(Vx)(Fx ɔ -Gx), (Vx)(Fx ^ Hx)}/ .. (3x)¬Gx 11. -(Vx)¬Fx/.. (Ex)Fx 15. (3x)[Fx ɔ (3y)Gy]/ .'. (Vx)Fxɔ (3x)Gx
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