Evaluate the Cauchy Principal Value of ∫∞−∞sinxx(x2−2x+2)dx
so far, i have deduced that there are poles at z=0 and z=1+i if using the upper half plane. I am considering the contour integral ∫Ceizz(z2−2z+2)dz I dont know how to input graphs here but it would be intended at the origin with a bigger R, semi-circle surrounding that. So, I have four contour segments.
∫CR+∫−r−R+∫−Cr+∫Rr=2πiRes[f(z)eiz,1+i]+πiRes[f(z)eiz,o] I think. Ok, so here is where I get stuck. Im not sure how to calculate the residue here, its not a higher pole, so not using second derivatives, not Laurent series. Which method do I use here?
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