Past exam of the mathematics course of the University of Oxford / 2015 / Prelims / Mathematics II / 1 / b / i

Table of contents
- Solution i

Solution

Choose the sequence

a_{n} = (- 1)^{n} (n \geq 1) .

Every even index is a peak of a sequence

(a_{n})

, since its value is

1

and all later values are at most

1

. Every odd index is a peak of a sequence

(- a_{n})

for the same reason. Both sets of indices are infinite.

 Ancestors (12)

 View article source

 Discussion (0)

There are no discussions about this article yet.

 Articles by others on the same topic (0)

There are currently no matching articles.

  See all articles in the same topic Create my own version