Question: Show that every compound wff is equivalent to a wff using only the connectives of (vee) and '. Exercises 47-50 show that defining four basic

Show that every compound wff is equivalent to a wff using only the connectives of $\vee$ and '.
Exercises 47-50 show that defining four basic logical connectives (conjunction, disjunction, implication, and negation) is a convenience rather than a necessity because certain pairs of connectives are enough to express any wff.

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