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69 | P a g e

1
3. (a) –4 (b) 
2

4. (a) 4 (b) 3

3
5.
2

6. 4
1
7. (a) 2 (b) 3

641 ,B 
A 
8. (a) (i)  29 (ii) 10 (b) 1
64

9. (a) lim ( ) 7 (b) 18
f
x
x 4
 1 1
10. (a) (i) 25 (ii) (iii) 0 (b) p 
6 3

x  1 1 1 x  2 4x  5
11. (a) lim  (b) lim  6
x 2 x  2 2 x 1 x  1
12. (a) k  1

(b) (i) Does not exist.

(ii) lim f   x   4
x

(iii) lim f   2x 
x 3

10
13. (a) 4 (b)
3
14. a  2, b 
3
15. 30

3
16. (a) 1 (b) A  , B   7
1
17. (a) (b) 20
4

4
18. (a) 2 (b) p  1 (c) q 
1 3
19. (a) (b) 
2 2