б) ОДЗ :
x² + 4x > 0
x(x + 4) > 0
+ - +
_______₀_______₀________
- 4 0
/////////////// /////////////////
Область определения : x ∈ (- ∞ ; - 4) ∪ (0 ; + ∞)
a)
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б) ОДЗ :
x² + 4x > 0
x(x + 4) > 0
+ - +
_______₀_______₀________
- 4 0
/////////////// /////////////////
Область определения : x ∈ (- ∞ ; - 4) ∪ (0 ; + ∞)
a)