Analysis and Approaches for IBDP Maths Ebook 2

Answers Chapter 5 Exercise 17 17.1 Refer to solution 17.2 Refer to solution 17.3 Refer to solution 17.4 Refer to solution Exercise 18 Exercise 21 21.1 x � 0 , x � � , x � 2� , x � 3� or x � 4� 21.2 3� x � 4 21.3 � 7� x � , x � 2 8 21.4 � 11� x � or x � 12 12 18.1 Refer to solution 18.2 Refer to solution 18.3 Refer to solution 18.4 Refer to solution Chapter 6 Exercise 19 19.1 Refer to solution 19.2 Refer to solution 19.3 Refer to solution 19.4 Refer to solution Chapter 7 Exercise 20 20.1 20.2 20.3 20.4 81 sec4� �� 79 24 tan 2� �� 7 8 sec 4� � 7 3 cot 2� � 4 Exercise 22 22.1 �7 21 �48 cos( � �2 �) � 125 22.2 �57 �8 66 sin( � �2 �) � 125 22.3 a � 1, b �� 1 22.4 2 10 sec x � 9 Exercise 23 � � � � 23.1 (a) �x: � � x� � � 2 4� (b) 23.2 (a) �1 2 f ( x) �arctan(1 � x ) � 1 � �x: � x�1� � 2 � 2 � � x � � (b) f 1 ( x) �sin � � � � 4 6 � 23.3 (a) m � 2 (b) � 4 23.4 (a) r � 18 (b) 1 � arctan 18 www.seprodstore.com 273

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