Toán đề 01
Quiz
•
Others
•
2nd Grade
•
Practice Problem
•
Medium
Bảo Hân
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35 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trên mặt phẳng tọa độ Oxy,cho hai đường thẳng d1: a1x+b1y+c1=0 và d2:a2x+b2y+c2=0, hai đường thẳng đã cho trùng nhau khi và chỉ khi
a1/a2=b1/b2=c1/c2
a1/a2=! b1/b2
a1/a2.b1/b2=1
a1/b2=! b1/a2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trên mặt phẳng tọa độ đường thẳng d: x-2y+3=0 nhận véctơ nào sau đây là một véctơ pháp tuyến?
n=(-2,3)
n=(1,-2)
n=(2,1)
n=(-1,-2)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(P): y^2=2px với p>0 phương trình đường chuẩn của parabol là
x=-2p
x=-p/4
x=-p
x=-p/2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
toạ độ đỉnh của đồ thị hàm số bậc hai y=ax^2+bx+c(a=!0) là
(-b/2a; - đenta/4a )
(-b/2a;đenta/4a)
(b/2a)
đenta/4a
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
pt nào sau đây là phương trình chính tắc của Elip(a>b>0)
x^2/a^2+ y^2/b^2=1
x^2/a^2-y^2/b^2=0
x^2/a^2-y^2/b^2=1
x^2/a^2+y^2/b^2=0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
…
hệ(*) có vô số nghiệm
hệ(*) vô nghiệm
hệ(*) có 2 nghiệm phân biệt
hệ(*) có nghiệm duy nhất
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
….
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