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Homework Help: Help Simplifying Equation

  1. Apr 17, 2010 #1


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    1. ex*eh+e-x*e-h -ex -e-x/ 2h

    2. This should simplify to (e^x-e^-x)/2. This is lim (h--->0) so in the end the h should become 0 (I think!)

    3. I have absolutely no idea what to do!
  2. jcsd
  3. Apr 17, 2010 #2


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    Science Advisor

    I presume your original equation is
    [tex]\frac{e^x e^h + e^{-x} e^{-h} - e^x - e^{-x}}{2h}[/tex]​

    Look for some common factors.
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