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Homework Statement
The problem and its solution are attached in TheProblemAndSolution.jpg.
Homework Equations
Stoke's theorem: ∮_C F ⋅ dr = ∮_C (F ⋅ T^{^}) dS = ∫∫_S (curl F) ⋅ n^{^} dS
The Attempt at a Solution
In the solution attached in the TheProblemAndSolution.jpg file, I don't understand what's going on with the integral that has n^{^} ⋅ k^{^} on a denominator.
Could someone please add the steps that are skipped by the solution?
Attachments

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