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Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
1
Solutions to Exercise 15.3 (p. 365−366) from Chow Wai Keung’s Discovering Additional
Mathematics (Textbook)
1(a)
1(b)
(
)
(
)
1(c)
( )
1(d)
1(e)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
2
1(f)
1(g)
1(h)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
3
2(a)
( )
( ) ( )
( )( )
2(b)
( )
( )( )
2(c)
( )
( )
( )( )
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
4
2(d)
( ) ( )
( ) ( )
( )( )
2(e)
( )
( )( )
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
5
2(f)
( )
( )( )
3(a)
( )
3(b)
( )
3(c)
( )
3(d)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
6
3(e)
3(f)
( )
3(g)
( ) ( )
( ) ( )
( )
[ ( )]
3(h)
( ) (
) (
)
[
( )] (
)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
7
(
)
(
)
4.
( )
( )
( )
Substitute (1) into (2):
( )
( )
5(a)
( )
( )
5(b)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
8
5(c)
5(d)
5(e)
( )
5(f)
5(g)
5(h)
( )
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
9
6(a)
( )
( )
( )
( )( )
6(b)
( )
( )( )
6(c)
( )
6(d)
( )( )
7(a)
( ) ( )
[( )( )]
( )( )
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
10
7(b)
( )
( )
( )
( )
( )( )
7(c)
( ) ( )
( ) ( )
[( )( )]
( )( )
( )( )
7(f)
8(a)
(
)
8(b)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
11
(
)
(
)
9(a)
9(b)
(
)
( )
10(a)
(
)
(
)
Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)
12
(b)(i)
( )
(b)(ii)
(
)
The End