16-x^2 ≥ 0
(4-x) (4+x) ≥ 0
x = 4, -4
Метод интервала:
- ][ + ][ -
-------------o-----------------------o------------------>
-4 4 x
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16-x^2 ≥ 0
(4-x) (4+x) ≥ 0
x = 4, -4
Метод интервала:
- ][ + ][ -
-------------o-----------------------o------------------>
-4 4 x