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STEP III 1997 question 6 solutionTSR Wiki > Study Help > Subjects and Revision > Mathematics > STEP > STEP III 1997 question 6 solution Solution 1To use the 2nd boundary condition, observe So Solution by DFranklin Solution 2Differentiate (1) to get (2): Substitute (1), (2) and The general solution of this linear homogeneous second order differential equation is We have It follows that Upon expanding with Trigonometric Addition Formulas and adding Solution by khaixiang |