Метод интервалов

Метод интервалов

9th - 10th Grade

5 Qs

quiz-placeholder

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Метод интервалов

Метод интервалов

Assessment

Quiz

Mathematics

9th - 10th Grade

Practice Problem

Medium

Created by

Vera Buravtsova

Used 41+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Решите неравенство

 (x+7) (x+2) (x3)<0\left(x+7\right)\ \left(x+2\right)\ \left(x-3\right)<0  

 (;7)(2;3)\left(-\infty;-7\right)\cup\left(-2;3\right)  

 (7;2)(3;+)\left(-7;-2\right)\cup\left(3;+\infty\right)  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Решите неравенство

 (2x) (x+1) (4x+8)0\left(2-x\right)\ \left(x+1\right)\ \left(4x+8\right)\le0  

 [2;1][2;+)\left[-2;-1\right]\cup\left[2;+\infty\right)  

 (;2][1;2]\left(-\infty;-2\right]\cup\left[-1;2\right]  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Решите неравенство

 (3x18) (49x2)>0\left(3x-18\right)\ \left(49-x^2\right)>0  

 (;7)(6;7)\left(-\infty;-7\right)\cup\left(6;7\right)  

 (7;6)(7;+)\left(-7;6\right)\cup\left(7;+\infty\right)  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Решите неравенство

 (5x29x+4) (x2+2x)0\left(5x^2-9x+4\right)\ \left(x^2+2x\right)\le0  

 [2;0][0,8;1]\left[-2;0\right]\cup\left[0,8;1\right]  

 (;2][0;0,8][1;+)\left(-\infty;2\right]\cup\left[0;0,8\right]\cup\left[1;+\infty\right)  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Решите неравенство

 (x3+x2+5x) (16xx248)<0\left(x^3+x^2+5x\right)\ \left(16x-x^2-48\right)<0  

 (0;4)(12;+)\left(0;4\right)\cup\left(12;+\infty\right)  

 (;0)(4;12)(12;+)\left(-\infty;0\right)\cup\left(4;12\right)\cup\left(12;+\infty\right)  

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