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Additional Mathematics 4037/22

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How? It was so lengthy...I was writing till after the bell rang! What were the coordinates of D btw? You can answer it tomorrow :p
 
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1. y=25x^4 - 20x^2 + 4
2. (i) A, E
(ii) C,D
5. 4+3root5
The vector question: OC = 10i -24j and unit vector OC = 5/13i - 12/13j
Circular measure question: r=12.7 cm, A=14.6 cm^2
Two possible coordinates of C (0,10) and (4,2)
In that natural logarithm question, e^x = 3 and x = ln 3
Coordinates of k and c were 9 and 5.
Last question: Area was 16.9 units.
 
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651
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554
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103
1. y=25x^4 - 20x^2 + 4
2. (i) A, E
(ii) C,D
5. 4+3root5
The vector question: OC = 10i -24j and unit vector OC = 5/13i - 12/13j
Circular measure question: r=12.7 cm, A=14.6 cm^2
Two possible coordinates of C (0,10) and (4,2)
In that natural logarithm question, e^x = 3 and x = ln 3
Coordinates of k and c were 9 and 5.
Last question: Area was 16.9 units.

Wat r these k n c? cant remember :confused:
 
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