
 exponential function  a definition from Whatis.com 
  When the exponent decreases by 1, the value of the function decreases by this same factor (it is divided by e). 
  When the exponent increases by 1, the value of the base10 function increases by a factor of 10; when the exponent decreases by 1, the value of the function becomes 1/10 as great. 
  For a given, constant base such as e or 10, the exponential function "undoes" the logarithm function, and the logarithm undoes the exponential. 
 whatis.techtarget.com /definition/0,,sid9_gci213699,00.html (242 words) 
