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@Aaghaz Mahajan
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Ok. But I believe he should come. He's good at this stuff. I've read his notes - and gave me a interesting infinite series / function in one of my notes.
The proof given by Mr.Aaghaz is correct and mine is same too .Yet using this very idea we can prove this result,
nΓ(1/n)ζ(1/n)=∫0∞exn−11dx, giving us,
n1∫0∞ex−1x1/n−1dx=∫0∞exn−11dxas the result.
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This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.
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Simply use the Gamma Function. After the substitution ar4=t, the integral becomes 4a431∫0∞t−41e−tdt. The answer comes out to be 4a43Γ(43)
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You could ask @Aruna Yumlembam - he's an expert on Gamma Functions - he likes them @Abhinavyukth Suresh
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I have already given the answer tho.
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@Aaghaz Mahajan
He'll probably show the entire proof - see his notes.Log in to reply
ar4=t and then the answer follows
There is no "proof" neede here. Simply substituteLog in to reply
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Not saying you're bad or anything.
so, isn't there any other method than using gamma function to solve this integral?
The proof given by Mr.Aaghaz is correct and mine is same too .Yet using this very idea we can prove this result, nΓ(1/n)ζ(1/n)=∫0∞exn−11dx, giving us, n1∫0∞ex−1x1/n−1dx=∫0∞exn−11dxas the result.
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Yeah we can prove the identity by summing an infinite GP too. Also these types of integrals are known as Bose Einstein Integrals
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Thanks a lot.But can you please give me a your solution to your problem How is this ??!!
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n=1∑∞e−nx = ex−11
Sure. Observe thatUsing this, we have ∫0∞ex−1xt−1dx=∫0∞(n=1∑∞xt−1e−nx)dx
Swapping the integral and summation , and using the identity ∫0∞xae−bxdx = ba+1a! we will arrive at the answer.
Mr. Yajat Shamji,if people provides a solution to any problem you must try and appreciate it and not discourage them.Please don't repeat such acts.
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I'm not. I.. was thinking of you and I read your profile so I thought I could bring you over. After all, you like to contribute, right?
Also, I wasn't discouraging @Aaghaz Mahajan's solution, I..
@Alak Bhattacharya, @Mahdi Raza, @Zakir Husain, @Gandoff Tan
@Aruna Yumlembam - @Abhinavyukth Suresh needs your help on solving this integral - needs the Gamma Function and a full proof.
Help him, please?