设p,q的真值为0;r,s的真值为1,求下列各命题公式的真值(可用真值表法)。
(1) p2228(q2227r)
(2) (p2194r)2227(00acp2228s)
(3) (p2227(q2228r))2192(p2228q)2227(r2227s)
(4) 00ac(p2228(q2192(r222700acp))) 2192 (r222800acs)
(1) p2228(q2227r)
(2) (p2194r)2227(00acp2228s)
(3) (p2227(q2228r))2192(p2228q)2227(r2227s)
(4) 00ac(p2228(q2192(r222700acp))) 2192 (r222800acs)