Question Paper & Mark Scheme (Merged)
Wednesday 4 June 2025 [VERIFIED]
, 2
Do not write
outside the
box
Answer all questions in the spaces provided.
1 The equation of a curve is given by
y = 3ex
dy
Find an expression for
dx
Circle your answer.
[1 mark]
3e–x 3e1 3ex 3 xe x –1
2 A sequence is defined by
1
xn+1 = – xn with x1 = 32
4
The first four terms of the sequence are
32, –8, 2, –0.5
Which one of the following can be used to describe this sequence?
Circle your answer.
[1 mark]
Convergent Decreasing Increasing Periodic
G/Jun25/7357/1
, 3
Do not write
outside the
box
3 Express
log3 2x – log3 x
as a single logarithm.
Circle your answer.
[1 mark]
1
log log3 2 log3 x log3 2 x2
3 2
Turn over for the next question
Turn over U
G/Jun25/7357/1
, 4
Do not write
outside the
box
4 The first three terms, in ascending powers of x, of the binomial expansion
1
of (1 – 8x) 2 are
1 + nx – 8 x2
where n is a constant.
4 (a) State the range of values of x for which the expansion is valid.
Circle your answer.
[1 mark]
1 1
│x│ –8 │x│ – │x│ │x│ 8
8 8
4 (b) State the value of the constant n
Circle your answer.
[1 mark]
1
– 16 –4 4
2
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