please prove this:(adsbygoogle = window.adsbygoogle || []).push({});

<Ψ|[tex]H\overline{^}[/tex]|Ψ>[tex]\geq[/tex]E_{0}

function |Ψ> is normalized.

prompt: (expand function |Ψ> in the eigenbasis of H operator, count average and use ortonormality of the H base)

exercise 5.2.2 , p.163 , "principles of quantum mechanics" Shankar

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# Normalized function and minimum energy

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