O LEVEL MATHEMATICS QUESTIONS

Section A

[52 marks]

Answer

all

questions in this section.

1 (a)

Express as a single fraction in its simplest form

i)                   1/2x–2/5 x

Ii) 4/x+7/x– 3

.

b) A function is defined by f(x) ;  2x-3/4

i)

Find f(2).

i)

Given that f –1(x) =cx+d

, find the values of  c and d

.

ii)

Given that f(g) = –g

, find the value of  g

2 (a)

The formula for the area of a trapezium is

A=1/2h(c+d).

i)                   Find an expression for  c in terms of  A ,h and d

(ii) The diagram shows a trapezium with dimensions given in centimetres.

The perpendicular distance between the parallel lines is 4 cm.

The area of the trapezium is 22 cm

2 Find c.

                                                      c

                                               4    g