ฟังก์ชันประกอบและพีชคณิตของฟังก์ชัน

Quiz
•
Mathematics
•
10th Grade
•
Hard
รุ่งฤดี อภิชัยสุขสกุล
Used 48+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
ให้ f = {(-1,2),(2,4),(3,-1),(4,-2)} และ g = {(-1,2),(-2,3),(3,5),(2,10)} แล้ว fog เท่ากับข้อใด
{(-1,4),(-2,-1)}
{(-1,10),(3,2)}
{(-1,4),(2,-2),(3,2)}
{(-1,10),(-2,5)}
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
ถ้า f(x) = x - 10 และ g(x) = 2x + 3 แล้ว fog(5) ตรงกับข้อใด
-7
-5
3
13
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
5
7
12
28
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
ให้ f(x) = 3x + 1 และ g(x) = x - 9 แล้วข้อใดไม่ถูกต้อง
fof(x) = 9x + 4
fog(x) = 3x - 27
gof(x) = 3x - 8
gog(x) = x - 18
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
ให้ f(x) = 2x + 3 และ g(x) = 3x - k ค่า k ที่ทำให้ gof(x) = 6x + 4 เท่ากับข้อใด
4
5
6
7
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
ให้ f = {(1,4),(2,3),(3,5),(4,6)} และ g = {(1,2),(3,0),(5,6)} ข้อใดต่อไปนี้ไม่ถูกต้อง
f + g = {(1,6),(3,5)}
f - g = {(1,2),(3,5)}
f g = {(1,8),(3,0)}
f g = {(1,2),(3,0)}
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
ให้ f(x) = 2x - 1 และ g(x) = x2 + 3x - 1 แล้ว (f - g)(-1) เท่ากับข้อใด
- 6
- 3
0
3
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