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PutnamSuperchallengeIntegrals I: Feynman's Trick

Integrals I: Feynman's Trick · Superchallenge problem

Let yy solve y′+1xy=xy' + \dfrac{1}{x}y = x for x>0x > 0 with y(1)=1y(1) = 1. Compute y(2)y(2).