Parallel mechanisms, demonstration relationships

In the formal theory of quantum mechanics, the Schrodinger wave equation is taken as a postulate (fundamental hypothesis). In order to demonstrate a relationship with the classical wave equation, we obtain the time-independent Schrodinger equation nonrigorously for the case of a particle that moves parallel to the x axis. For a standing wave along the x axis, the classical coordinate wave equation of Eq. (14.3-10) is... 

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