Find the nth partial sum of the arithmetic sequence.
1,4,9,16,25, ... ; n=10

Question

Find the nth partial sum of the arithmetic sequence.
1,4,9,16,25, ... ; n=10

anonymous · Answer

Do you see a pattern in the first few numbers?

anonymous · Answer

I just dont know how to do the problem.... My teacher never explained this well.

anonymous · Answer

I looks like each number is added by intervals of odd numbers.
So... 1 to 4 is a +3
4 to 9 is a +5
9 to 16 is a +7
16 to 25 is a +9

anonymous · Answer

Thats all I have.

jdoe0001 · Answer

$\large \begin{array}{cccccccccc}
1st&2nd&3rd&4th&5th&...&10th\
\hline\
1&4&9&16&25& ... & n=10\
\hline\
1^2&2^2&3^2&4^2&5^2&...&10^2
\end{array}$

anonymous · Answer

Sorry, internet went out. Anyway, that is pretty good intuition. Another way to look at it, which will save you from a lot of arithmetic, is that notice each is a square.

1^2 + 2^2 + 3^2 out the nth term

anonymous · Answer

Are you supposed to be finding the general term, or the actual value of the sum out to the nth term?

anonymous · Answer

Its just telling me to find the partial sum.
Sorry for the late reply, my internet went out too.