Analysis and Approaches for IBDP Maths Ebook 1 | Page 315

Chapter 5
Exercise 17
17.1 (a) � 7
(b) � 141
(c) � 1425
17.2 (a) 0.5
(b) 24
(c) 2037
17.3 (a) 3
(b) 6
(c) 105
17.4 (a)
4
�
3
(b)
34
�
3
(c) � 960
Exercise 18
18.1 (a) � 196
(b) 124
18.2 (a) un
�0.5n�
17
(b) 46
18.3 (a) 50
(b) 6425
18.4 (a) 20
(b) 630
Exercise 19
19.1 u1 � 52 , d �� 3
19.2 u1 � 9 ,
4
d �
5
19.3 (a) u1 � 52 , d � 19
(b) 394
19.4 (a) u1 � 1300 , d �� 128
(b) 7152
Exercise 20
20.1 (a) 0.7
(b) 46.6
(c) 1472.5
20.2 (a) 2
(b) 42
(c) 1220
20.3 (a) � 3
(c) 171
20.4 (a)
1
14
(b)
39
14
Chapter 6
Exercise 21
21.1 (a)
(b)
(c)
21.2 (a)
(b)
1
4
1
16
4096
3
1
2
3 ln x
2
96ln x
(c)
21.3 (a)
(b)
(c) 6
21.4 (a) 3 (b)
(c)
e �4x
e �12x
(11 �n)
x
3
1 3
11
2 �
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