You should now Launch Deriver and do the 1 exercise of Predicate Exercise 9 (Predex9).
Derive the following
(a) Fa ∴ (∀x)Fa
(b) (∀x) (Fx∧Gx) ∴ (∀x)Fx
(c) (∀x) (Fx∧Gx) ∴ (∀y)Fy
(d) ∴ (∀x)Fx≡(∀y)Fy
(e) (∀x) (Fx∧Gx) ∴ (∀y)Fy∧(∀z)Gz
(f) ∴ (∀x) (Fx∧Gx) ≡ (∀y)Fy∧(∀z)Gz
(g) ∴ (∀x) (Fx∧Gx) ≡ (∀x)Fx∧(∀x)Gx