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Triangular numbers - Roots with bases other than 1

  1. Mar 9, 2010 #1
    Not sure where this should go, but - How would you calculate the square root of a triangular number with a base other than 1? For example, 2, 6, 12, 20 (Base 2).

    Would rather have help to figure it out than the actual formula.
  2. jcsd
  3. Mar 9, 2010 #2
    Never mind - Realized I can just divide the number by the base and use the normal formula.
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