Hey i just joined here.

am stuck on this question:

A sequence A(n) is defined by A(n)= (n+4)/2n

a.)Prove that the sequence is bounded below by 1/2(Thinking)

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- Jun 10th 2012, 05:43 PMshadnSequence and Series
Hey i just joined here.

am stuck on this question:

A sequence A(n) is defined by A(n)= (n+4)/2n

a.)Prove that the sequence is bounded below by 1/2(Thinking) - Jun 10th 2012, 06:03 PMPlatoRe: Sequence and Series
- Jun 11th 2012, 01:11 AMbiffboyRe: Sequence and Series
- Jun 11th 2012, 03:00 AMshadnRe: Sequence and Series
Could you explain...

- Jun 11th 2012, 04:05 AMbiffboyRe: Sequence and Series
n is a positive integer so !/2 + 4/n is always greater than 1/2 but increasing n makes it closer and closer to 1/2

- Jun 11th 2012, 04:10 AMbiffboyRe: Sequence and Series
n is a positive integer so 1/2+2/n is always greater than 1/2 but gets closer and closer to 1/2 as n increases

- Jun 11th 2012, 11:48 PMshadnRe: Sequence and Series
hey thanks man-got it