Recent content by pepe

Thanks Mr. Pasmith! I'll begin to study it. Maybe I reach...

Good morning (afternoon in Spain). Probably I'm not expressing well. What I mean is that in that book (Copson, 1935, pp.157. Exercice 39), Copson wrote that cos (ax)/sin pi*x was equal to the expression including a sumatory that I sent attached. But I have not found how to get that second...

looking instead of looling! My english is bad, but I make it even worse.

Thanks anyway. I'm looking and looking in the internet, for a track to the solotion. But I don't reach it. Maybe nowadays maths afford than problems in a very different way, by means of computers, and not looling for "exact" solutions. Hope someone has the answer found in an old book. Thanks again.

Thanks, reading a book on hidrogeology, there that equation was used and referred to Copson, I went there and found it, as an exercise with the solution, but it didn't appear how to reach the solution. I attach the complete equation (in fact, there are two). I'm trying to do it with Fourier...

I' m trying to solve something as apparently simple like this cos ax/sin pi*x which appears solved in https://archive.org/details/TheoryOfTheFunctionsOfAComplexVariable in the page 157, exercise 9. second part. I'm trying by Fourier series, but by the moment I can't achieve it. Thanks.