MathCastle
Differential EquationsSuperchallengeThe Wronskian & Variation of Parameters

The Wronskian & Variation of Parameters · Superchallenge problem

Solve t2y′′+ty′+y=sec⁡(ln⁡t)t^2y''+ty'+y=\sec(\ln t) on e−π/2<t<eπ/2e^{-\pi/2}<t<e^{\pi/2} with y(1)=0y(1)=0, y′(1)=0y'(1)=0, and give y ⁣(eπ/4)y\!\left(e^{\pi/4}\right).