Analysis and Approaches for IBDP Maths Ebook 2

Answers 29.2 (a) Refer to solution (b) Refer to solution (c) Refer to solution (d) Refer to solution 29.3 (a) Refer to solution (b) Refer to solution (c) Refer to solution (d) Refer to solution 29.4 (a) � � 1 PN � q � r ��1 ��1 (b) Refer to solution (c) Refer to solution Exercise 30 30.1 (a) (3, 5, 2) (b) 9 22 (c) � x�3�7u � �y � 5 � 10u � � z � 2 � 7u (d) d �� 68 (e) 1980 30.2 (a) Refer to solution (b) � � 30 (c) ACB ˆ � 60 (d) 3 (e) 10 3 30.3 (a) (4, 6, 4) (b) a � 3 (c) ( � 1, 0, 2) (d) 83 29 2 (e) 12 30.4 (a) Refer to solution (b) � � 120 (c) 8 or 2 Exercise 31 31.1 � � 137 31.2 �1 � � 2 � � � � 4 � 3 � � r � � � � t �6 �2 � � � � 1 � 0 � � � � � � � 1� � 3 � � � 2 � � 2 � � � � � 7 5 31.3 r � � � � t � � � � 2 � � 2� � � � � 0 1 � � � � � � � � 31.4 (a) (1,1, � 3) (b) Exercise 32 � 1 � � 2 � � � � � r � 1 � t �2 � �3� � �3� � � � � 32.1 (a) 2x �3y � z � 6 (b) ( �9, 8, � 6) (c) a � 3, b � 2 , c � 6 (d) 6 � (e) (i) CA � 3 i� 6 k, (f) (ii) � � 3 3 14 11 � CB � 2 j� 6 k www.seprodstore.com 275

Analysis and Approaches for IBDP Maths Ebook 2 | Page 285