Analysis and Approaches for IBDP Maths Ebook 1 | Page 326

Your Practice Set – Analysis and Approaches for IBDP Mathematics
Chapter 18
Exercise 77
77.1 (a) (i)
(b)
(ii)
11
38
77.2 (a) (i)
(b)
(ii)
3
35
77.3 (a) (i)
(ii)
3
5
8
11
3
5
9
14
18
25
5
8
(b)
7
100
77.4 (a) (i) 4
(b)
Exercise 78
(ii)
1
330
78.1 (a) (i) 4
(ii) 5
(b)
2
15
78.2 (a) (i) 2
(ii) 13
(b)
1
20
78.3 (a) (i) 0.4
(ii) 0.2
(b) 0.7
78.4 (a) (i) 0.3
(ii) 0.1
(b) 0.1
a � , b � 6
6
7
Exercise 79
79.1 (a) Refer to solution
(b)
15
28
79.2 (a) Refer to solution
(b)
5
6
79.3 (a)
5
8
(b)
13
40
(c)
3
13
79.4 (a)
3
5
(b)
2
3
(c)
3
5
Exercise 80
80.1 (a) 0.2
(b) 0.52
80.2 (a) 0.15
(b) 0.65
80.3 0.58
80.4 0.21
Exercise 81
81.1 (a)
4
6k
(b) 0.2
(c) 0.88
81.2 (a)
4
4k
(b)
1
10
(c)
259
2500
81.3 (a)
1
3
(b) 1
81.4
9
10
318
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