Recent content by MM360

Thanks everyone for the help/replies I have found the reason why and my lecturer has confirmed it so i understand it now

I used cosx = 1/2[exp(ix) + exp(-ix)] x and z are just dummy variables so that is correct - even the solution has the same thing its just the indenting contour reasoning I am stuck on

thanks for the reply - but I am fine with calculating the residue - its the reasoning of why the first integral i mentioned goes to 0 its easier to expand the top in its Taylor expansion and divide to get a residue of i/2pi - this is not a problem only the reasoning

Homework Statement Hi I am new on here so I am just writing out the question. Real integral ie from - infinity to + infinity of [cos(x) -1]/(x^2) 2. Homework Equations + solution attempt I know you have to use the exp cosx idenity and then split the integral. also it has a removable...