Skip to content

Course home

1.7 D: Sequences and series

1.7 D: Sequences and series

Easy Medium Hard

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

Question 28

A sequence $u_1, u_2, u_3, \dots\,$ is defined by

$u_1 = 3$

$u_{n+1} = u_n + c$ , $\geq 1\,$

where $c\,$ is a constant.

It is given that $u_5 = 23$ .

a.

Find the value of $c$ .

[2]

b.

Find an expression for $u_n\,$ in terms of $n$ .

[2]

Markscheme

1.7 D: Sequences and series Questions

A Level
Maths
1.7 D: Sequences and series

308 exam-style questions on AQA A Level Maths 1.7 D: Sequences and series, covering 1.7.1 Binomial expansion, 1.7.2 Types of sequence (A-level only), 1.7.3 Sigma notation (A-level only), 1.7.4 Arithmetic sequences and series (A-level only), 1.7.5 Geometric sequences and series (A-level only), and 1.7.6 Sequences and series in modelling (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank