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Aula 05 – Tomando
     decisões




  Ricardo153@live.com
O que veremos hoje:


1   Tomada de decisões


2         lógica


3       Ambiente


4       Atividades




                         Company Logo
Tomada de decisões




                     Página 31
Tomada de decisões




                     Company Logo
Símbolos comparativos
    Símbolos
    Universais




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NEGAÇÃO (símbolo ~)
 Quando usamos a negação de uma proposição
  invertemos a afirmação que está sendo dada. Veja os
  exemplos:

 Ex1. : ~P (não P): O Pão não é barato. (É a negação
  lógica de P)

  ~Q (não Q): O Queijo é bom. (É a negação lógica de
  Q)




                                              Company Logo
CONJUNÇÃO (símbolo Λ)
 O resultado dessa união somente será verdadeiro se as
  duas proposições (P e Q) forem verdadeiras.

  Ex.2: P Λ Q. (O Pão é barato e o Queijo não é bom.) Λ
  = “e”
  Regrinha para o conectivo de conjunção (Λ)


                             Veja como fica na
                              tabela verdade.




                                                  Company Logo
Tabela verdade?!!
PeQ=2                       P, Q e R = 2
conjuções                    conjuções


    PeQ                      P-Q-R
                        P        Q         R
P    Q




                                           Company Logo
DISJUNÇÃO (símbolo V)
O resultado será verdadeiro se pelo menos uma 
das proposições for verdadeira.
 Ex3.: P V Q. (Ou o Pão é barato 
 ou o Queijo não é bom.) 

 V = “ou”




                                                 Company Logo
CONDICIONAL (símbolo →)

“P” será condição suficiente para “Q” e “Q” é 
condição necessária para “P”.
Ex4.: P → Q. (Se o Pão é barato 
então o Queijo não é bom.)

 → = “se...então”




                                                 Company Logo
BICONDICIONAL (símbolo ↔)

Ex5.: P ↔ Q. (O Pão é barato 
se e somente se o Queijo não 
é bom.)


 ↔ = “se e somente se”




                                Company Logo
Revisão

P   Q   ~P   ~Q   P^Q    PvQ   P   Q   P       Q




                                           Company Logo
Atividades propostas

    (P ^ Q) v P


P             Q   P^Q   (P ^ Q) v P




                                      Company Logo
Atividades propostas

(P v Q) -> (P ^ ~Q)




                             Company Logo
Atividades Avaliativas




                         Company Logo
Atividades Avaliativas




                         Company Logo
Atividade em grupo


É pra ser entregue hoje




ricardo153@live.com       Somente
                          Pra hoje

    Valendo 10pts




                               Company Logo
Company Logo




                                        4
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Sejam organizados

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                    1
Aula 05   tomando decisões

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Aula 05 tomando decisões