Finding Eigenvalues for u''+λu=0

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beetle2
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Hi guys,

Can someone please explain how you find the eigenvalues of this type?

u''+\lambda u =0

or point me to some decent literature?

regards
Brendan
 
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It's a second order, homogenous ODE, see if knowing the name helps you find the method. If not, I'll help more.
 
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