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

Exclamation mark

  1. Feb 24, 2009 #1
    What does the exclamation mark mean in calculus? For example, a question might ask for the sum of a series ((-1)^n)/n!.
  2. jcsd
  3. Feb 24, 2009 #2


    User Avatar

    Staff: Mentor

    In many math applications, it refers to the factorial:


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