Give an example of the following or prove that such a request is impossible: (h) A sequence with an infinite number of ones (1's) that converges to a limit not equal to 1. (i) An unbounded sequence (an) and a convergent sequence (bn) with (an - bn) bounded.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
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Analysis

Give an example of the following or prove that such a request is impossible:
(h) A sequence with an infinite number of ones (1's) that converges to a limit not
equal to 1.
-
(i) An unbounded sequence (an) and a convergent sequence (bn) with (an — bn)
bounded.
Transcribed Image Text:Give an example of the following or prove that such a request is impossible: (h) A sequence with an infinite number of ones (1's) that converges to a limit not equal to 1. - (i) An unbounded sequence (an) and a convergent sequence (bn) with (an — bn) bounded.
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Step 1

What is Sequence:

A sequence is a collection of objects where repeats are allowed and the order is important in mathematics. It has members, sometimes known as words or elements, just like a set. The length of the sequence depends on the number of elements. In contrast to a set, a sequence may include the same items more than once at various points, and unlike a set, the order of the sequence is important. A sequence can be described formally as a function from natural numbers (the elements of the sequence's locations) to the items that are present in each of those positions. A "indexed family" is a function that connects an index set, which may or may not be a set of integers, to another set of items.

To Give:

Two statements are Given:

A sequence with an infinite number of ones (1's) that converges to a limit not equal to 1.
An unbounded sequence an and a convergent sequence bn with an-bn bounded.

Either we give an example or we disprove it. 

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