for waffle.

june 2007

1. 1/2

2. 42pi cubic units

3. shown

4. 1.5 or -1.5

5. (i) 4root3 (ii)48root3 - 24pi

6. (i) 3y+2x=20 (ii) C(10,0) D(14,6)

7. (i) a=6 (ii) -450

8 (i) a=3, b=-4 (ii) x=0.36 or 2.78

9. i) 1/7 (2 3 -6) <--- vector form (ii) m= -2, n = 3, k= -8

10. i) 2 - 16/x(cubed), 48/x(to the power of 4) (ii) x=2, y=6, minimum. (iv) 7 sq.units.

11. (i) -12(2x+3)(to the power of -2), always -ve, therefore decreasing. (ii) (1/2) (6/x - 3) (iv) x = 1

November 07

1. k<-4

2. 9 1/3 sq.units.

3. i) 32+80u+80u(squared) (ii) 160

4. i) a+4d, a+14d (iii) 5/2

5. ii) 70.5, 289.5

6. D ( 31/5 , 48/5)

7. ii) 6(3 - root3) + 2pi

8 i) 6[(2x-3)squared - 1] (ii) 24(2x-3)

9 i) y = 3 + 4x - x(squared)/2 ii) 2y + x = 20 iii) Q (7 , 13/2)

10. i) (2 2 2) , (-2 2 4) ii) 19.5 iii) 12.8cm

11. i) 2(x - 2)squared + 3 ii) f (more than or equal to) 3 iii) f is not one-one iv) A=2 x) 2 - (root) ((x-3)/2) , g(inverse) (less than or equal to 2)

I know some of the answers are vague. but yeaahhh.

pictures, try saving them onto your phone then view them on your laptop? I don't know. I hope you can see them on your phone. x]

zisce.