Skip to content

Course home

1.4 Sequences and Series

1.4 Sequences and Series

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243
Question 22

A periodic sequence is defined by

un=cos⁡(nπ)u_n = \cos(n\pi)un​=cos(nπ)

State the period of this sequence.

Select the correct answer.

A

1

B

2

C

3

D

4

Markscheme

1.4 Sequences and Series Questions

  1. A Level
  2. /Maths
  3. /1.4 Sequences and Series

308 exam-style questions on OCR A Level Maths 1.4 Sequences and Series, covering 1.4.1 Binomial expansion for positive integer n, 1.4.2 Link to binomial probabilities, 1.4.3 Binomial expansion for rational n (A-level only), 1.4.4 Validity of the expansion (A-level only), 1.4.5 Sequences (A-level only), 1.4.6 Increasing, decreasing and periodic sequences (A-level only), 1.4.7 Sigma notation (A-level only), 1.4.8 Arithmetic sequences and series (A-level only), 1.4.9 Geometric sequences and series (A-level only), 1.4.10 Sum to infinity of a geometric series (A-level only), and 1.4.11 Modelling with sequences and series (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank