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Two phase decay equation solution

  1. Dec 27, 2011 #1
    Hello,

    Does anyone know how to solve an equation of the form:

    e-ax+e-bx=c

    Where a,b and c are constants?

    This left side of the equation represents the sum of two exponential decay processes, one fast and one slow. I want to know for what positive value of x the expression on the left side of the equation will decay to the constant c.

    Thanks!

    Sherif
     
  2. jcsd
  3. Dec 28, 2011 #2
    Normally, if you have two separate decay processes occurring at the same time, you don't add the expression. Instead, you add the exponents.
     
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