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How is integral finished? and what integral equation used?

  1. Jan 1, 2016 #1
    new doc 11_1.jpg
     
  2. jcsd
  3. Jan 1, 2016 #2

    BvU

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    Hello zq,
    Is there a context to this question ? What is this about ? Any idea what each of the various symbols stands for ?
     
  4. Jan 1, 2016 #3
    sorry for the so simple description
    this is a expand F(x) with particle in a box energy eigenfuctions
    F(x)=x(x-l) for 0<x<l and F(x)=0 elsewhere
    psi is the wave function of ground state particle in a box equation
     
  5. Jan 1, 2016 #4

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    So at the core you need $$ \int_0^l x\, sin(ax)\; dx {\rm \quad and \quad} \int_0^l x^2 \,sin(ax)\; dx$$ (with ## a = n\pi/l##) , right ?
    Ever met these integrals ?
     
  6. Jan 1, 2016 #5
    thanks,
     
  7. Jan 1, 2016 #6

    BvU

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    You are welcome !


    :smile:
     
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