
Toán
Authored by Hau Dua
Mathematics
10th Grade
Used 7+ times

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60 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Tập xác định của hàm số y=x⁴-2018x²-2018 là
( -1 ; + ∞ )
( - ∞ ; 0 )
( 0 ; + ∞ )
( - ∞ ; + ∞ )
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Tìm tập xác định D của hàm số
D = R \ { 2 }
D = R \ {±2}
D = R \ {–1 ; 2 }
D = R \ { –1 ; ± 2 }
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Trong các hàm số sau , hàm số nào là hàm số đồng biến trên R ?
y = 1–2x
y = 3x+2
y = x²+2x–1
y = –2(2x–3)
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Hàm số nghịch biến trên khoảng ( –∞ ; –1 )
Hàm số đồng biến trên khoảng ( 1 ; +∞ )
Hàm số nghịch biến trên khoảng ( –1 ; 1 )
Hàm số đồng biến trên khoảng ( –1 ; 0 )
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
M1 ( 2 ; 1 )
M2 ( 1 ; 1 )
M3 ( 2 ; 0 )
M4 ( 0 ; –2 )
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Hàm số y = ax² + bx + c , ( a > 0 ) đồng biến trong khoảng nào sau đây ?
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Cho parabol (P) : y = 3x²–2x+1 . Điểm nào sau đây là đỉnh của (P) ?
I ( 0 ; 1 )
I ( ⅓ ; ⅔ )
I ( -⅓ ; ⅔ )
I ( ⅓ ; -⅔ )
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