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chirag
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Dec 05, 2016; 3:12pm
mathematics problem
21 posts
Question 1) - Let Pn=[((2^3)-1)/((2^3)+1)]*[((3^3)-1)/((3^3)+1)]*....*[((n^3)-1)/((n^3)+1)] for n=2,3,4,......
Find the limit of Pn when n tends to infinity
A)3/4 B)7/11 C)2/3 D)1/2
Abhitesh
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Dec 06, 2016; 4:48am
Re: mathematics problem
162 posts
Pn can be written as
7/9 * 26/28 * 63/65 * 124/126 * 215/217 * ...
= 1.7/3.3 * 2.13/4.7 * 3.21/5.13 * 4.31/6.21 * 5.43/7.31 * ...
After cancellation Pn = 2/3
chirag
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Dec 06, 2016; 5:40am
Re: mathematics problem
21 posts
Sir got it what you did, but can you please explain.
chirag
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Dec 06, 2016; 5:58am
Re: mathematics problem
21 posts
Followed your answer sir Thank you. No need to explain.
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