PERGUNTA 3 Assinale a alternativa que corresponde ao valor-verdade da expressão left parenthesis there exists x right parenthesis left parenthesis there exists y right parenthesis left square bracket P left parenthesis x comma y right parenthesis logical and Q left parenthesis x comma y right parenthesis right square bracket quando, respectivamente é: P left parenthesis x comma y right parenthesis colon x squared plus y squared equals 1 text e end text Q left parenthesis x comma y right parenthesis colon x comma y greater than 0. P left parenthesis x comma y right parenthesis colon x comma y greater than 0 text e end text Q left parenthesis x comma y right parenthesis colon x cubed plus y cubed less than 0. P left parenthesis x comma y right parenthesis colon x not equal to y text e end text Q left parenthesis x comma y right parenthesis colon x minus y equals 0.
a. V-F-V.
b. F-F-F.
c. V-V-V.
d. V-V-F.
e. V-F-F. ​