Infinite Well with Schrodinger equation

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SUMMARY

The discussion centers on the interpretation of the wave function solutions to the Schrödinger equation in quantum mechanics, specifically the infinite well model. The user expresses confusion regarding the representation of the wave function, ψ(x), as both a complex exponential function, ψ(x) = e^i(kx), and as a linear combination of sine and cosine functions, ψ(x) = ASin(kx) + BCos(kx). It is clarified that A and B are indeed complex numbers, with A=i and B=1 representing a specific case of the general solution.

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  • Understanding of the Schrödinger equation in quantum mechanics
  • Familiarity with wave functions and their representations
  • Knowledge of complex numbers and their properties
  • Basic concepts of quantum mechanics, particularly the infinite potential well model
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  • Explore the properties of complex numbers in quantum mechanics
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Homework Statement


I'm having a bit of trouble following my textbook, I was under the impression ψ(x) = e^i(kx) = Cos(kx) + iSin(kx) but in my textbook they write the general solution to this equation as ψ(x) = ASin(kx) + BCos(kx). How come they wrote the sin part as not imaginary? isn't this suppose to be a complex number? I know this example is like the most common example for introduction to quantum physics classes so I'm hoping somebody can give me some insight here
 
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A and B are complex numbers.
A=i and B=1 is a special case of the more general solution.
 
mfb said:
A and B are complex numbers.
A=i and B=1 is a special case of the more general solution.

A and B are BOTH complex numbers? oh geeez this stuff is more confusing than i thought!
 

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