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Problem doing induction question

  1. Oct 8, 2012 #1
    1. The problem statement, all variables and given/known data
    Prove the following result using mathematical induction:
    2³+4³+6³+...+(2n)³=2n²(n+1)² for all n>or=1

    2. Relevant equations

    3. The attempt at a solution

    Assume n=k

    Using assumption
    Divide by 2(k+1)²

    I can't understand where I've gone wrong.
    Any help would be greatly appreciated.
  2. jcsd
  3. Oct 8, 2012 #2
    Figured it out the second I put it up. Removed a 2³ as a 2.
  4. Oct 8, 2012 #3


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    Staff Emeritus
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    The following line looks as if you are assuming the very thing you are to prove.
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