Question

Find the partial sum?

`sum_(n=-2)^1(n+6)`

Answer 1

`sum_(n=-2)^1(n+6) = 22`

Explanation:

We seek:

`S = sum_(n=-2)^1(n+6)`

If we expand the summation this becomes:

`S = (-2+6) + (-1+6) + (0+6) + (1+6)`

`\ \ = 4 + 5 + 6 + 7`

`\ \ = 22`