La Salle College – F3 Maths Final Exam Paper 1 A B 2014-15

Numerical Answer (數值答案):

Paper 1 Section A

1. \(\dfrac{y^{11}}{x^{13}}\)
2. 4x³ – 4x² -5x
3. (3m – 2n + 4x)(3m – 2n – 4x)
4. \(x = \dfrac{15}{14}y + \dfrac{2}{7}\)
5. 117.5625 cm²
6. a) $42.5
   b) 70%
7. 80°

Section B

8. x < 11/2
9. a) x = 2/3  or  x = 3/4
   b) y = -1/3  or  y = -1/4
10. 112 m
11. x = 41,  y = 28
12. a) 3/25
    b) 43/50
13. a) 250000
    b) $29291.48
14. a) –
    b) (11/3, 10/3)
15. a) \(sin\theta = \dfrac{2t}{1 + t^{2}}\)
         \(cos\theta = \dfrac{1 – t^{2}}{1 + t^{2}}\)
    b) –
16. a) –
    b) –

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