If I have two eigenfunctions of an operator with the same eigenvalue how do I construct linear combinations of my eigenfunctions so that they are orhtogonal?(adsbygoogle = window.adsbygoogle || []).push({});

My eigenfunctions are: f=e^(x) and g=e^(-x)

and the operator is (d)^2/(dx)^2

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# Homework Help: Eigenfunctions and their Eigenvalues

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