Analysis and Approaches for IBDP Maths Ebook 1 | Seite 312

Your Practice Set – Analysis and Approaches for IBDP Mathematics
Answers
Chapter 1
Exercise 1
3.3 (a) 5 and 11
(b) x � 8
(c) 1.5
3.4 (a) 0 and 18
(b) x � 9
(c)
2
3
Exercise 4
1.1 (a)
(b)
1.2 (a)
(b)
1.3 (a)
(b)
1.4 (a)
(b)
3
5.43�
10 cm
6 2
2.35�
10 cm
4
1.52�
10 cm
7 2
2.49�
10 cm
3
4.11�
10 cm
3
6.85�
10 cm
4
8�
10 cm
4
8.04�
10 cm
4.1
5
k �� or
2
4.2 k � 0 or
5
k �
2
1
k �
2
4.3 �1� k � 3
4.4 k � 1 or k � 16
Exercise 5
Chapter 2
Exercise 2
2.1 (a) 2 and 4
(b) (i) x � 3
(ii) � 1
2.2 (a) 1 and 10
(b) (i) x � 5.5
(ii) � 20.25
2.3 (a) 0 and � 7
(b) (i) x �� 3.5
(ii) 24.5
2.4 (a) � 3 and 3
(b) (i) x � 0
(ii) 13.5
Exercise 3
5.1 (a) 4
(b) 4
(c) 3 or � 7
5.2 (a) 1
(b) � 1
(c) 1 or 9
5.3 (a) � 3
(b) � 1
(c) 4
5.4 (b) p � 1.5 , a � 4
(c) 0 or 1
Exercise 6
6.1 �3�
k � � 1
6.2 k �� 9.29 or k � 1.29
6.3 k � 0 or k � 10
6.4 No real solution
3.1 (a) x �� 5 and x � 7
(b) (1, � 36)
3.2 (a) x �� 1 and x �� 6
(b)
� 7 25 �
��
, � �
� 2 2 �
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