Тест "метод интервалов" 9 класс
Quiz
•
Mathematics
•
9th Grade
•
Medium
И что
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11 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Решение какого неравенства изображено на рисунке?
Answer explanation
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Решите неравенство:
[0;5]
(-∞;0)u(5;+∞)
(-∞;0]u[5;+∞)
(0;5)
Answer explanation
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Решите неравенство:
[0;4]
(-∞;0)u(4;+∞)
(0;4)
(-∞;0]u[4;+∞)
Answer explanation
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
(-∞;-2)u(0;+∞)
(-∞;-2]u[0;+∞)
(-2;0)
[-2;0]
Answer explanation
Вынесем (-х) за скобки и получим уравнение вида: -х(х+2)≤0
Избавляемся от минуса перед икс, а значит знак уравнения поменяется на противоположный: х(х+2)≥0
Под это условие подходит промежуток под №2
5.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
(-∞;-3)u(0;+∞)
[-3;0]
(-3;0)
(-∞;-3]u[0;+∞)
Answer explanation
Вынесем (х) за скобки и получим уравнение вида: х(х+3)>0
Под это условие подходит промежуток под №1
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
(-∞;-0)u(1;+∞)
[0;1]
(0;1)
(-∞;0]u[1;+∞)
Answer explanation
Вынесем (-х) за скобки и получим уравнение вида: -х(х-1)≥0
Избавляемся от минуса перед икс, а значит знак уравнения поменяется на противоположный: х(х-1)≤0
Под это условие подходит промежуток под №2
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