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I Need help [wave function]

  1. Apr 9, 2017 #1
    I don't understand "ψ (x,t) =Ae^i(px-Et)/h"

    I understand dψ^2/dx^2 = i^2p^2/h^2

    but why dψ^2/dx^2 = -p^2/h^2

    "-" from
    "i^2" missing
    please help me :frown::frown::frown::frown::frown::frown:
     
  2. jcsd
  3. Apr 9, 2017 #2

    hilbert2

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    Science Advisor
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    The imaginary unit ##i## is a number with property ##i^2 = -1##. The only other number with same property is ##-i##.
     
  4. Apr 9, 2017 #3
    thankful
     
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