Question

A Student wrote the arithmetic series 8 + 11 + … + 29 in summation notation as
∑8n=2(3n+5)
∑
�
=
2
8
(
3
�
+
5
)

.



Describe and correct the error in the notation. (2 points)

Answer 1

The error in the notation is that the starting index of the summation should be 1 instead of 2. The correct summation notation for the arithmetic series 8 + 11 + … + 29 would be:

∑n=1(3n + 5)