ข้อใดคือค่า a และ b ในคู่อันดับ
(a+1, 2 ) = ( 3 , b - 1 )
ข้อสอบซ่อม ความสัมพันธ์และฟังก์ชัน
Quiz
•
Mathematics
•
10th Grade
•
Hard
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21 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
ข้อใดคือค่า a และ b ในคู่อันดับ
(a+1, 2 ) = ( 3 , b - 1 )
a = 1 , b = 2
a = 2 , b = 3
a = 1 , b = 4
a = 4 , b = 2
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
กำหนด A = {2,4} , B = {1,3,5}
จงหาจำนวนสมาชิกของ A x B
3
6
9
12
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
กำหนด A = { 5 , 3 } จงหา A x A
{(5,3)}
{(3,5)}
{(5,5) , (3,3)}
{(5,5) , (5,3) , (3,5) , (3,3)}
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
กำหนด A = { 3 , 1 } , B = { 2 , –3 }
ข้อใดคือเซต A × B
{(3,2) , (1,–3)}
{(3,–3 ) , (1,2)}
{(3,2) , (3,–3) , (1,2) , (1,–3)}
{(2,3) , (–3,3) , (2,1) , (–3,1)}
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
ข้อใดกล่าวผิด
A x B อ่านว่า เอ คูณ บี
A x B = { (a , b) | a ∈ A และ b ∈ B }
(a,b) = (c,d) ก็ต่อเมื่อ a = c และ b = d
A x B = B x A เสมอ
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
กำหนด A = { 1,2 } , B = { 0,3,5} และ
r = { (x,y) A x B | x >y}
เขียน r แบบบอกเงื่อนไขได้ในข้อใด
r = {(0,1) , (0,2)}
r = {(2,0) , (2,1)}
r = {(0,2) , (0,1)}
r = {(1,0) , (2,0)}
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
พิจารณาข้อความกำหนด A = {1,2} , B = {1,4} และ r = {(1,1),(2,4)} เขียน r แบบบอกเงื่อนไขได้ในข้อใด
r = { (x,y) A x A | x =
r = { (x,y) B x B| x =
r = { (x,y) A x B | x =
r = { (x,y) B x A | x =
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