additional mathematics (add maths) harwood clarke's textbook (exercise 18 solutions)

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Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/) 1 Solutions to Exercise 18 (p. 43) from Harwood Clarke’s Additional Pure Mathematics Additional Pure Mathematics is a book used to teach Additional Mathematics in the 1960s and 1970s. The questions are good, and for selected topics, I require my GCE O-Level students to attempt questions this book. 1. 2. 3. ( ) ( )

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Solutions to Exercise 18 (p. 43) from Harwood Clarke’s Additional Pure Mathematics.

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Page 1: Additional Mathematics (Add Maths) Harwood Clarke's Textbook (Exercise 18 Solutions)

Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)

1

Solutions to Exercise 18 (p. 43) from Harwood Clarke’s Additional Pure Mathematics

Additional Pure Mathematics is a book used to teach Additional Mathematics in the 1960s

and 1970s. The questions are good, and for selected topics, I require my GCE O-Level

students to attempt questions this book.

1.

2.

3.

(

)

(

)

Page 2: Additional Mathematics (Add Maths) Harwood Clarke's Textbook (Exercise 18 Solutions)

Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)

2

4.

5.

is the 16th term of the G.P.

6.

Page 3: Additional Mathematics (Add Maths) Harwood Clarke's Textbook (Exercise 18 Solutions)

Dr CK Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/)

3

(

)

(

)

(

)

(

)

7.

√ √

The geometric mean of 18 and 50 is 30.

8.

Substitute into (2):