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va rog eu mult ajutati-ma!

 
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tudorash1989



Joined: 06 Jan 2011
Posts: 1

PostPosted: Thu Jan 06, 2011 9:59 pm    Post subject: va rog eu mult ajutati-ma! Reply with quote

am un verisor in cls a cincea si m-a rugat pana maine sa ii rezolv o problema si nu stiu cum,sunt in dilema. suna cam asa:
Determinati multimile A si B astfel incat sa fie indeplinite toate cele 3 relatii:
AUB={1,2,3,4}
AUB={1,3}
A/B={2}

ma contactati pe tuzgureanu_1989 pe mess daca aveti un rasp plzzzzzzzzzzzzzzzz
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smecherul100
Euclid


Joined: 09 Nov 2010
Posts: 37

PostPosted: Fri Jan 07, 2011 3:25 pm    Post subject: Reply with quote

banuiesc ca a doua oara este interesectatn nu reunit...
deci ambele contin elementele 1si 3,dar doar A contine 2.acum ami ramane elemntul 4.acesta il poti pune intr-una din cele 2 multime.nu poate ifi in ambele caci ar fi atunci inca un element in intersectie,nici in A nu poate fi pt ca ar avea ultima relatie si elemntul 4( A ar fi avut un element in plus fata de B).deci B contine elemntul 4
deci A={1,2,3} si B={1,3,4}...postul de mainainte este gresit...
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Petrescubianka



Joined: 21 Feb 2011
Posts: 3

PostPosted: Tue Feb 22, 2011 11:00 am    Post subject: Reply with quote

am si uitat cum se fac Smile)
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