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`~(p^^q)-=(~pvv~q)`

Prove that ~((~p)^^q) -=pvv(~q) .

Prove that ~((~p)^^q) -=pvv(~q) .

Prove that ~((~p)^^q) -=pvv(~q) .

Prove that ~((~p)^^q) -=pvv(~q) .

STATEMENT-1 : The inverse of (p^^~q) rArrr " is "~pvvqrArr ~r and STATEMENT-2 : ~(p^^q)=~pvv~q

STATEMENT-1 : The inverse of (p^^~q) rArrr " is "~pvvqrArr ~r and STATEMENT-2 : ~(p^^q)=~pvv~q

Using truth tables, examine whether each of the following statements is a tautology or a (p^^q)^^(~pvv~q) contradiction or contigency:

Let p, q, r be three statements. Then, ~(pvv(q^^r)) is equal to a) (~p^^~q)^^(-p^^r) b) (~pvv~q)^^(~pvv~r) c) (~p^^~q)vv(~p^^~r) d) (~pvv~q)vv(~p^^~r)