## Relation to sin and cos [ENDORSED]

$H_{\psi }=E_{\psi }$

1-D: $E_{TOTAL}\psi (x)=E_{k}\psi (x)+V(x)\psi(x)=-\frac{h^{2}}{8\pi ^{2}m}\frac{d^{2}\psi(x)}{dx^{2}}+V(x)\psi(x)$

Vista_Farkhondeh_3O
Posts: 26
Joined: Tue Jul 12, 2016 3:00 am

### Relation to sin and cos

Can someone please explain again how this equation relates to sin and cos? Thanks

Eunnie_Lee_3H
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Joined: Fri Jul 22, 2016 3:00 am
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### Re: Relation to sin and cos  [ENDORSED]

Schrodinger basically used a wave function to describe an electron so he could come up with a general equation for finding the energy of an electron instead of having just an empirical equation like the Rydberg equation.

Wave functions are basically talking about the sin/cos functions. And, the derivative of sin(x) -> cos(x), and derivative of cos(x) -> -sin(x), etc.