Elip (E): x2/25 + y2 /9=1 có độ dài trục lớn bằng

Newton & conic

Quiz
•
Mathematics
•
10th Grade
•
Medium
Giang Hương
Used 2+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
5
10
25
50
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Cho parabol (p) có phương trình chính tắc y2 =2px với p>0. Phương trình đường chuẩn của (p) là
Y=-p/2
Y=p/2
Y=p
Y=-p
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Viết phương trình chính tắc của parabol đi qua điểm A(1,2)
Y= x2 +2x-1
Y=2x2
Y2 =4x
Y2 =2x
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Điểm nào là tiêu điểm của parabol y2 =1/2x
(1/8;0)
(0;1/4)
(-1/4;0)
(1/2;0)
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Elip có 1 đỉnh là a(5;0) và có 1 tiêu điểm f(-4;0). Phương trình chính tắc của elip là
X^2/25+y^2/16=1
X^2/5+y^2/4=1
X^2/25+y^2/9=1
X/5+y/4=1
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Đường hypebol x2/20-y2/16=1 có tiêu cự bằng
12
2
4
6
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Hypebol x2/16-y2/9=1 có 2 tiêu điểm là
(-5;0) & (5;0)
(-2;0)&(2;0)
(-3;0)&(3;0)
(-4;0)&(4;0)
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