Zaznacz na odi i podaj przedział.
|x| < 5
-5 < x < 5
/-------------\
--------o--------------o--------->
- 5 5
odp. x ∈ (-5, 5)
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|x| < 5
-5 < x < 5
/-------------\
--------o--------------o--------->
- 5 5
odp. x ∈ (-5, 5)