# Math Help - Write in summation notation

1. ## Write in summation notation

nb

2. Originally Posted by oceanmd
-3 + 10 + 23 + ......

$\sum_{k = 1}^{n} \ k+13$

Thsi is wrong. Will you please help me out on this.

Thanks
plug in k = 1 and see what the first term of your series is. does that match up with the first term of the list of numbers you have?

3. Originally Posted by oceanmd
I did, I know it's wrong, I just do not know how to determine it.
how about $\sum_{k = 0}^{\infty}13k - 3$ ?