Analysis and Approaches for IBDP Maths Ebook 2 | Page 264

Your Practice Set – Analysis and Approaches for IBDP Mathematics
(b) (1) The area of the triangle CFG
(CG)(FG)
�
2
�� 1� � 1��
(1) �� 4 � � � � 4 � �
3 2
�
� � � �
�
�
�
2
1
�
12
(2) 1 � 1 �
� � A
1 �
2 �
2 �6 � 6
1 � A
1
2
�
12 6
�� 1� � 1��
(1) �� 4 � � � � 4 � �
4 3
�
1 1
(c)
�� � � �� �� � � ��
� A3
� (1) �� 4 � � � � 4 � ��
2 �� 4 � � 3 ��
1 � A
1
3
�
24 12
(d)
�� 1 � � 1��
(1) ��4 � � � � 4 � �
n 1 n
�
�� � � � �� �� 1 � � 1��
� An
� (1) ��4 � � � � 4 � ��
2 �� n�1� � n��
1 �1 1 � 1 1
� � �� A n
� �
2 �n n �1�
n n �1
1 �n �1�
n � n �1�
n
� ��
An
�
2 � n( n �1) � n( n �1)
1 1
� A n
�
2 n( n �1) n( n �1)
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