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Math Help - Summation Notation, Please Help

  1. #1
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    Unhappy Summation Notation, Please Help

    My book gives no helpful examples and I'm so confused by this concept.

    Wat are the values of the following sums, where S={1,3,5,7}

    E(summation notation)j^2
    j is a member of S

    I'm not looking for someone to give me the answer, but for someone to explain what all this means and maybe give me an example so I can see it work.
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  2. #2
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    Quote Originally Posted by sjenkins View Post
    My book gives no helpful examples and I'm so confused by this concept.

    Wat are the values of the following sums, where S={1,3,5,7}

    E(summation notation)j^2
    j is a member of S

    I'm not looking for someone to give me the answer, but for someone to explain what all this means and maybe give me an example so I can see it work.
    \sum_{j \in S} j^2 = 1^2 + 3^2 + 5^2 + 7^2

    That's all there is to it.
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  3. #3
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    That's all???? You just put the values of S in place of j??? That's too easy, thanks for the help!
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