Question

Write the sum using summation notation, assuming the suggested pattern continues.

25 + 36 + 49 + 64 + ... + n2 + ...

Answer 1

Any ideas?

Answer 2

nope :/

Answer 3

If I say something like

\[\Large \sum_{i=1}^{3} i\]

then I literally mean "add up i 3 times like so: i+i+i, but replace the first i with 1, the second with 2, and the third with 3 to get 1+2+3

So

\[\Large \sum_{i=1}^{3} i = 1 + 2 + 3\]

Answer 4

Do you see how I'm getting this example?