Page 189 - Mathematics_Form_3

Answers

14. y 17. y

5 5
f(x)=(x+2) 2
4 4

3 3
FOR ONLINE READING ONLY
2
f(x)=x -x+1
2 2
1
1
-1 0 1 2 3 4 x
-4 -3 -2 -1 0 1 2 x
-1
-1
It is not a one-to-one function
It is not a one-to-one function 18. y
15. y
4
3
3
2 f(x)=3-x
f(x)=-x-1 2
1
1
-5 -4 -3 -2 -1 0 1 2 x
-1
-1 0 1 2 3 4 x
-2 -1
-3
It is a one-to-one function

It is a one-to-one function 19. Not one-to-one
16.
20. Not one-to-one
y
Mathematics for Secondary Schools -2 -1 -1 0 1 f(x)=-x 2 x 22. Not one-to-one
1
21. One-to-one
3
2
23. One-to-one
5
−
2, b =
24. a =
-2
Exercise 2.3
-3
-4
x
10
y £
Range { : 33y=
It is not a one-to-one function 1. Domain { : 10x= - - £ ££ 47 } };
x
2. Domain { :0x= ≤≤ 5};
Range { :0y= ≤ y ≤ 5};

182 Student\s Book Form Three

18/09/2025 10:00:08
MATHEMATIC F3 SB.indd 182 18/09/2025 10:00:08
MATHEMATIC F3 SB.indd 182