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# VIII.9 Intervale de numere reale

Rezolvati exercitiile mai intai pe caiet.

1. (2,10) ∩ (3,5] = #
, ,
2. (-2,0)∩ (0,3] = #
8-intervale.JPG, , ,
3. L = #
(1;5), , ,
4. (-4,%2b∞) - [-4,5] = #
[3;15), , ,
5. G = #
(-1;10], , ,
6. F = #
[-2;3], multiple choice questions , ,
7. (-12,2] ∩ (5,∞) = #
(-inf;3), , ,
8. I = #
[5;%2binf), , ,
9. [3,∞) - (3,∞) = #
(-2;%2binf), , ,
10. Daca A = (-∞,10) si B = [0,%2b∞), atunci A∩ B = #
[-9;-4], , ,
11. Daca A = (-3,5) si B = [4,%2b∞), atunci A U B = #
(-7;7), , dynamic quiz ,
12. (-∞,3) ∩ (2,4] = #
[-3;3], , ,
13. Sa se scrie ca intervale multimile:
(-3;4], , ,
14.
R, , ,
15. (3,5] U (5,7) = #
[0;10), web page, ,
16. J = #
(-3;inf), computer assisted language learning , ,
17. [3,∞) ∩ (0,3] = #
[0;3), , ,
18. [-1,4] - { -1,13 } = #
R, , ,
19. C = #
(3;7), , educational activities ,
20. E = #
(3;5], , ,
21. [-2,5] - [-2,3) = #
MV, , ,
22. [5,12] ∩ (0,20) = #
MV, , ,
23. INTERVALE DE NUMERE REALE ATENTIE : pentru %22 infinit %22 veti folosi prescurtarea inf ex. (-∞;5) veti tasta (-inf;5) [0,%2b∞) veti tasta [0,%2binf) ATENTIE : pentru multimea vida veti folosi notatia MV
[4;%2binf), , ,
24. (4,%2b∞) U [4,10] = #
{3}, , learning ,
25. D = #
[5;12], , ,
26. Daca A = (-∞,10) si B = [10,%2b∞), atunci A U B = #
(2;3), , ,
27. Daca A = (-∞,3) si B = [0,7), atunci A ∩ B = #
[5;%2binf), , ,
28. A = #
(0;3), , ,
29. [0,3] - {0,3} = #
(-1;4], , ,
30. (5,∞) U {5} = #
{3}, , ,
31. (2,3) U {2,3} = #
[3;5], , ,
32. K = #
(5;%2binf), , ,
33. H = #
MV, , results ,
34. B = #
[2;3], , ,