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Câu hỏi củng cố

Authored by Nguỵ 1

Architecture

1st - 5th Grade

Used 41+ times

Câu hỏi củng cố
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Tìm tọa độ tâm đường tròn: (x−1)2+(y+2)2=4\left(x-1\right)^2+\left(y+2\right)^2=4

I(1;2)I\left(1;2\right)

I(1;−2)I\left(1;-2\right)

I(−1;2)I\left(-1;2\right)

I(−1;−2)I\left(-1;-2\right)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Tọa độ tâm đường tròn x2+y2−4x+6y−1=0x^2+y^2-4x+6y-1=0

I(2;−3)I\left(2;-3\right)

I(−2;3)I\left(-2;3\right)

I(−2;−3)I\left(-2;-3\right)

I(4;−6)I\left(4;-6\right)

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Đường tròn tâm I(0;−1)I\left(0;-1\right) bán kính R=2R=2 có phương trình là

x2+(y−1)2=4x^2+\left(y-1\right)^2=4

x2+(y+1)2=2x^2+\left(y+1\right)^2=2

x2+(y+1)2=4x^2+\left(y+1\right)^2=4

(x+1)2+y2=4\left(x+1\right)^2+y^2=4

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Đường tròn tâm I(1;−3)I\left(1;-3\right) và đi qua điểm A(4;1)A\left(4;1\right) có phương trình là

(x−1)2+(y+3)2=5\left(x-1\right)^2+\left(y+3\right)^2=5

x2+y2−2x+6y−15=0x^2+y^2-2x+6y-15=0

(x+1)2+(y−3)2=25\left(x+1\right)^2+\left(y-3\right)^2=25

x2+y2−2x+6y+5=0x^2+y^2-2x+6y+5=0

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Đường tròn đường kính ABAB với A(−2;5), B(4;−1)A\left(-2;5\right),\ B\left(4;-1\right) có tâm II có tọa độ

I(3;−3)I\left(3;-3\right)

I(3;3)I\left(3;3\right)

I(1;2)I\left(1;2\right)

I(1;−2)I\left(1;-2\right)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Đường tròn x2+y2−2x−4y−1=0x^2+y^2-2x-4y-1=0 có bán kính là

R=2R=2

6\sqrt[]{6}

21\sqrt[]{21}

19\sqrt[]{19}

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Phương trình nào dưới đây là phương trình đường tròn?

x2+y2−2xy+4y−2=0.x^2+y^2-2xy+4y-2=0.

x2+y2−4x+2y+7=0.x^2+y^2-4x+2y+7=0.

x2+y2−2x+4y−1=0.x^2+y^2-2x+4y-1=0.

x2+2y2−6x+8y−4=0.x^2+2y^2-6x+8y-4=0.

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