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18.03.2013

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(x + 4)(3 - x)(x - 2)2 < 0.

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, , -4, 2, 3 . , f(x) = (x + 4)(3 - x)(x - 2)2 . " " f . , -4, 2, 3 , .. .

- x < -4, x > 3.

: x ∈ (-∞; -4) ∪ (3; +∞;).


(x - 1)(x - 5) < 0.

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1, 5. . , 0, 2, 6. . , , 1, 5 ( ).

, : 1 < x < 5, .

: 1 < x < 5.


(x - 2)(x + 13)(x - 7) ≥ 0.

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, . -13, 2, 7. . , , , .

, : x ∈ [-13; 2] ∪ [7; + ∞).

: x ∈ [-13; 2] ∪ [7; + ∞)


x + 1

x - 1

≥ 0.

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, x = 1 , . -1, 1, "" 1, .. , :

: x ∈ (-∞; -1] ∪ (1; +∞).

: x ∈ (-∞; -1] ∪ (1; +∞).


1...2 3 
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