Graficul temperaturilor pe parcursul a 12 ore.
Deci f:{12,13,14,15,16,17,18,19,20,...23,24}→Z
0ra
________lTemperatura
12 3grade
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13 3g
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14 l 4g
_______________________--
15 l5g
___________________------
16 l 6g
______________________--
17 l4g
________________________-----
18 l 3g
_____________________--------------
19 l 1g
_______________________________
20 l 0 g
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21 l 0g
__________________________---------
22 l -1g
__________________________----
23 l-2 g
______________________________
24 l-3 g
Deoarece pt ore diferite avem temperaturi egale functia nu este injectiva
