
Bài kiểm tra bất phương trình
Authored by Yến Nhi Nguyễn Thị
Mathematics
9th - 12th Grade
40 Questions
Used 1+ times

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho \( mn - 3 \gt 2 \). Khẳng định nào dưới đây đúng?
mn \gt 0
mn = 0
mn \lt 0
mn \geq 0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho \( 0 < a < 1 \). Khẳng định nào dưới đây là đúng?
10^x \gt a \iff x \geq 0
10^x \gt a \iff x \gt 0
10^x \gt a \iff x \lt 0
1 < 10^x < a \iff x \lt 0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tìm tập nghiệm của bất phương trình \( \frac{1}{9} \gt \frac{3}{x} \).
(−∞; 2)
(2; +∞)
(−2; +∞)
(−∞; 2)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nghiệm của bất phương trình \( 2x + 13 \gt 33 \) là:
x \gt \frac{3}{2}
x \lt \frac{2}{3}
x \gt -\frac{2}{3}
x \gt \frac{2}{3}
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Số nghiệm nguyên của bất phương trình \( 2x^2 + 1 - 3x \leq 2 \) là
6
2
4
5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nghiệm của bất phương trình \( 2x^2 - 9 + 17 - 11x \geq 22 \) là
x = \frac{2}{3}
x \gt \frac{2}{3}
x \neq \frac{2}{3}
x \leq \frac{2}{3}
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tập nghiệm \( S \) của bất phương trình \( \frac{1}{5}x - 1 + \frac{25}{x} \lt 0 \) là
(2; +∞)
(−∞; 1)
(1; +∞)
(−∞; 2)
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