Y''+sin(x)y=0 Where Y(0)=1 And Y'(0)=-1y(x)=Σ An*

Anonymous

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Y''+sin(x)y=0 where y(0)=1 and y'(0)=-1 y(x)=Σ An*xn <-- sum from 0 to infinity Hint: Don't try to solve.

 

Answer No.1

Anonymous

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ROC is x<1 only then it will converge

Answer No.2

JonnyTeacher

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For ROC we consider only variables If An is a constant ROC is solution of Xn<1 so X<1 If An Variable then AnXn<1 Xn<1/An X<n√(1/An)

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