неравенства второй степени

неравенства второй степени

10th Grade

10 Qs

quiz-placeholder

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неравенства второй степени

неравенства второй степени

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

Алла Арнаут

Used 23+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Какое из чисел не является решением неравенства   2x2+7x+3>02x^2+7x+3>0  

 2-2  

 4-4  

 00  

 11  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 2x2x1<02x^2-x-1<0  

 (;0.5)(1;+)\left(-\infty;-0.5\right)\cup\left(1;+\infty\right)  

 (0.5; 1)\left(-0.5;\ 1\right)  

 [0.5;1]\left[-0.5;1\right]  

 (+;1)(0.5;+)\left(+\infty;1\right)\cup\left(-0.5;+\infty\right)  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x2 1690x^2\ -169\ge0  

 (13;13)\left(-13;13\right) 

 (; 13][13; +)\left(-\infty;\ -13\right]\cup\left[13;\ +\infty\right)  

 [13;13]\left[-13;13\right]  

 (;13)(13;+)\left(-\infty;-13\right)\cup\left(13;+\infty\right)  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 12x2+8x+1012x^2+8x+1\le0  

 (12;16)\left(-\frac{1}{2};-\frac{1}{6}\right)  

 [12;16]\left[-\frac{1}{2};-\frac{1}{6}\right]  

 (; 12)(16;+)\left(-\infty;\ -\frac{1}{2}\right)\cup\left(-\frac{1}{6};+\infty\right)  

 [16;12]\left[-\frac{1}{6};-\frac{1}{2}\right]  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 x2<1.6xx^2<1.6x  

 (0,6; 1.8)\left(0,6;\ 1.8\right)  

 (;0)(1.6;+)\left(-\infty;0\right)\cup\left(1.6;+\infty\right)  

 [0; 1.6]\left[0;\ 1.6\right]  

 (0; 1.6)\left(0;\ 1.6\right)  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt


 Найдите область определения функции y=x27xНайдите\ область\ определения\ функции\ y=\sqrt{x^2-7x}  

 (;0)(7; +)\left(-\infty;0\right)\cup\left(7;\ +\infty\right)  

 (;0][7;+)\left(-\infty;0\right]\cup\left[7;+\infty\right)  

 решений нетрешений\ нет  

 xлюбое числоx-любое\ число  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 Найдите область определения функции   y=14x24x3Найдите\ область\ определения\ функции\ \ \ y=\frac{1}{\sqrt{4x^2-4x-3}}  

 [0.5; 1.5]\left[-0.5;\ 1.5\right]  

 (; 0.5)(1.5; +)\left(-\infty;\ 0.5\right)\cup\left(1.5;\ +\infty\right)  

 решений нетрешений\ нет  

 (0.5; 1.5)\left(-0.5;\ 1.5\right)  

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