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Sturm - Liouville Problem

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Sturm - Liouville Problem:   The Sturm - Liouville Problem is a special class of linear homogeneous boundary value problem given in the following definition.  Definition :      Consider a second order homogeneous linear differential equation of the form   d/dx [p(x) dy/dx ] + [q(x) + λ γ(x)]y=0, a≤x≤b                                                          ...............(1)   where p, q and γ are real - valued continuous functions on [a,b] and λ  is real parameter . Further consider the following two sets of prescribed conditions        a1 y(a) + a2 y'(a) = 0}                                            }...................(2)       b1 y(b) + b2 y'(b) = 0}    y(a) = y(b) , y'(a) = y'(b) , p(a) = p(b) .........(3)  where the real constants a1 and a2 are not both zero and b1 and b2  are not both zero .     A boundary value problem consisting of equation(1) with either the boundary condition (2) or the boundary condition (