Analysis and Approaches for IBDP Maths Ebook 1 | Página 313

Chapter 3
Exercise 7
7.1 (a) f
x �
( x)
�
8
(b) 159
7.2 (a)
� x �
f ( x)
�
2
(b) 4
7.3 (a) 12
(b) 10
7.4 (a) 5
(b) 3a
Exercise 8
�1 1
1 3
8.1 (a) � 3
(b) 2
(c) Refer to solution
8.2 (a) 0
(b) 2
(c) Refer to solution
8.3 (a) �2�
x � 3
(b) 3
(c) Refer to solution
8.4 (a) �4�
x � 3
(b) 4
(c) Refer to solution
Exercise 9
9.1 (a) (i) 3
(ii) � 4
(b) Refer to solution
9.2 (a) (i) 3
(ii) 4
(b) Refer to solution
9.3 (a) Refer to solution
(b) (0, � 2)
9.4 (a) Refer to solution
(b)
� 5 �
��
, � 5 �
� 2 �
Exercise 10
10.1 (a) h � 3, k �� 1
(b) � 10
(c) p �� 2 , q �� 6
(d) � 5 or � 1
10.2 (a) h � 1, k �� 6
(b) � 5
(c) p �� 4 , q �� 12
(d) � 2
10.3 (a) h � 1
(b) k � 4
(c) p �� 1, q �� 1, r � 3
(d) (0, 3), ( � 1, 0)
10.4 (a) a � 1, b � 4 , c � 6
(b) p � 2 , q �� 12 , r � 5
(c) ( �1, � 7) , (2,18)
Exercise 11
11.1 (a) 113
(b)
2
2x
�8x�
24
(c) � 6 or 2
11.2 (a) � 5
(b)
2
x �4x�
2
(c) �2�
6
11.3 (a)
3
3x � 4
(b) 77
(c) 7
11.4 (a)
4
5x � 1
(b) 406
(c) � 4 or 4
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