1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Quantum mechanics: how to sketch the wave function?

  1. Sep 13, 2012 #1
    Last edited by a moderator: Sep 13, 2012
  2. jcsd
  3. Sep 13, 2012 #2
    Re: quantum michanics:how to sketch the wave function ?

    I don't see how the solution you found corresponds to the problem.

    Your solution is incorrect because you ignore the function in [0, a].
     
  4. Sep 13, 2012 #3
    Re: quantum michanics:how to sketch the wave function ?

    so should i do the same integrate with the both intervales ?
     
  5. Sep 13, 2012 #4
    Compute the integral over the entire range [0, b]. Equate the result with 1 and solve it for A.
     
  6. Sep 13, 2012 #5
    http://im26.gulfup.com/2012-09-13/1347559112201.jpg [Broken]

    how is it now !
     
    Last edited by a moderator: May 6, 2017
  7. Sep 13, 2012 #6
    I do not see any difference from the previous attempt. You are still not taking the entire [0, b] range.
     
  8. Sep 13, 2012 #7
    sorry I upload the wrong pic.

    hear is the whole range.

    http://im24.gulfup.com/2012-09-13/1347562820501.jpg [Broken]


    I hope that I'm doing well.
     
    Last edited by a moderator: May 6, 2017
  9. Sep 13, 2012 #8
    This seems OK.
     
  10. Sep 13, 2012 #9

    vela

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    Please make your images smaller or simply link to them. When they're large, like yours, it makes it hard to read the thread.
     
  11. Sep 13, 2012 #10
    fine,, thanx

    so how should I sketch the function now ?!

    help me please ,
     
  12. Sep 13, 2012 #11

    vela

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    Put to use what you learned in your algebra classes and plot the function.
     
  13. Sep 13, 2012 #12
    Iam trying ,,
    is the time on the (x-axis)
    and the position on the (y-axis) ?

    should I write two tabels for the both cases individual !!
     
  14. Sep 13, 2012 #13
    You are asked to sketch the function at t = 0 as a function of x.
     
  15. Sep 13, 2012 #14
    while i asked to sketch at t=0 , so i will use the first function ..

    http://im18.gulfup.com/2012-09-13/1347568161121.jpg [Broken]

    i Supposed a random numbers ,,

    how is it ?!!
     
    Last edited by a moderator: May 6, 2017
  16. Sep 13, 2012 #15
    You need to sketch this on the interval [0, b]. With a somewhere in between. Random numbers are useless.
     
  17. Sep 13, 2012 #16
    sorry
    can you explain more please ,,
    how could I draw without a points !!
     
  18. Sep 13, 2012 #17
    On the x axis, choose some interval. Label its left end "0", its right end "b". Somewhere in that interval, choose another point, label it "a". What are the values of the function at those three points? Put them on them on the diagram. What else do you need to complete the sketch?
     
  19. Sep 13, 2012 #18
    how to chose the values of the position,which located on the y-axis ?
     
  20. Sep 13, 2012 #19
    I do not understand the question.
     
  21. Sep 13, 2012 #20
    I am trying to say that ,,
    if the time will label on the x-axis with 3 points (0,a,b)
    what is the functions which should label on the y-axis ?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook