Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Help Simplifying Equation

  1. Apr 17, 2010 #1

    BoT

    User Avatar

    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

    sylas

    User Avatar
    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.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook