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1 Revision Exercise 6

Solutions to Revision Exercise 6 (Ho Soo Thong & Khor Nyak Hiongs Panpac Additional Mathematics)

Solved by: Dr Lee Chu Keong (ascklee@gmail.com)

http://ascklee.org/CV/CV.pdf

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2 Revision Exercise 6

Revision Exercise 6 This PDF file only contains solutions. For the questions, please refer to Ho Soo Thong

and Khor Nyak Hiongs textbook, Additional Mathematics.

Question 1(a)

( ) ( )

( )

( ) ( )

To evaluate ( ) , substitute

( )

( )

Question 1(b)

Term 1: ( )

Term 2: ( ) ( ) (

)

Term 3: ( ) ( ) (

)

Term independent of ( ) is Term 10.

Term 10: ( ) ( ) (

)

( )

Question 2(a)

( ) ( ) ( )( )

( ) ( ) ( )( ) ( )( )

( )( )

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3 Revision Exercise 6

Question 2(b)

( )

( ) ( ) ( ) ( )

( )

( )

( ) ( ) ( ) ( )

( )

( ) (3)

( ) ( )

substitute into (1)

( )

Question 3(a)(i)

( )

(

) (

)

(

)

(

)

Question 3(a)(ii)

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4 Revision Exercise 6

( ) ( ) ( )

Question 3(a)(iii)

Question 3(a)(iv)

( ) ( ) ( )

( ) ( ) ( )

( ) ( ) ( )

Question 3(b)

By trial-and-error, ( )

This means that ( ) is a factor.

Using long division, ( ) ( )( )

( ) ( )( )( )

,

,

Question 4

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5 Revision Exercise 6

( ) ( ) ( )( )

( )

*****

( )( )

Question 5

( )( )

( ) [ ( )( ) ( )

( ) ]

( ) [ ( ( )

) ( ) ]

1 2 3 4 5x

0.5

1.0

1.5

2.0

2.5

3.0

y

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6 Revision Exercise 6

( ) [ (

) ( ) ]

( )[ ( )( ) ]

Coefficient of : ( )

Coefficient of :

Coefficient of :

Comparing with

Coefficient of :

Coefficient of :

( )

Coefficient of :

( )

( )( ) ( )

( )

Question 6

( )( )

( ) ( )( )

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7 Revision Exercise 6

( )( )

( )

( )

Question 6(a)

( )( )

( )( )

( )

( )

Question 6(b)

( )( )

( ) ( )( )

( )( )

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8 Revision Exercise 6

( )

( )

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