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Help ly needed in Mathematica Simplify

  1. Dec 26, 2009 #1
    Help urgently needed in Mathematica Simplify

    Dear All,

    I have a very longe expression (see file attached ) of variables x, a, Lambda... etc,
    when I apply "Simplify" I am left only with very short expression
    ONLY with variable Lambda.

    But if in the initial expression I declare "a" variable as equal to one (a = 1) and afterwrds try to do simplification it gives me ZERO!!!.

    So why this happen .. If the first "Simplify" tells me that the expression is dependent only on Lambda why "a" variable affects the result ...?

    Pls heelp... what I do wrong...
    George
     

    Attached Files:

  2. jcsd
  3. Dec 26, 2009 #2

    Hepth

    User Avatar
    Gold Member

    Re: Help urgently needed in Mathematica Simplify

    I assume theres some zeroes. The first answer is correct, as you can see if you do :
    Limit[fx[a],a->1]
    its the a independent solution. The second part (where it is 0) is most likely due to these divide by zeroes, where mathematica cannot correctly simplify it.
     
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