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Homework Help: Induction Principle

  1. Sep 27, 2008 #1
    1. The problem statement, all variables and given/known data
    Prove that summation k^3 from k=1 to k=n is equal to (summation of k from k=1 to k=n)^2.

    2. Relevant equations
    Induction Principle

    3. The attempt at a solution
    It is true for k=1, so we must assume it is true for k=n-->then prove true for k=n+1.

    Where do I go from here?
  2. jcsd
  3. Sep 27, 2008 #2


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    Homework Helper

    Can you write out an equation to express that statement ...

    ... and use it to derive an equation which expresses this 2nd statement.
  4. Sep 27, 2008 #3


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    Homework Helper

    There's one part of the question where you have to make use of the sum of a arithmetic progression. Just quote that formula, then you can prove it easily. That may be the problem you're having.
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