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.

2. Originally Posted by sjenkins
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.

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