the paper was okay with a few unique questions.. my answers
are:
1. a =3, b=-8
2. x< 2.72 wrong 0<x<2.72 is
correct..
3. b = 2, a =4
4i) 2 2/3
ii) y = 16
5. k = 6
6i) -2< or equal to x < or equal to 5
ii) c = 10
7. (2, 1.5)
8ii) pie/3, pie/2, 2pie/3
9i) max = 2, min = -4
ii) amplitude = 3
iii) period = 1080 drgs
iv) smallest value = 58.4 drgs
10ii) k = 0.072, m0 = 54.8
iii) 11.2 h
11i) y = x/4 + 6
ii) B = (8,8)
iii) C = (18,2)
iv) 42 wrong, 102 units square correct
12i) 12x / (4x - 1)^0.5
ii) 0.25units /s
iii) 2.5