Question: a: sin k2: d2: 17. Show that p.v./ = cos ka, where a, k: > 0. CD 332 _a2 HINT: This integral is the imaginary


a: sin k2: d2: 17. Show that p.v./ = cos ka, where a, k: > 0. CD 332 _a2 HINT: This integral is the imaginary part of a complex integral. To compute that integral, close the contour in the upper half-plane with a large semicircle and two small semicircular indentations around a and a, and use residues
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