Question

Evaluate

Answer 1

\[\sum_{n=2}^{8} -(n-5)\]

Answer 2

i got 0 but my teacher said it was wrong

Answer 3

Firstly you can take -1 out of the summation sign..

Answer 4

Now put the values from 0 to 8..

Answer 5

Sorry 2 to 8..

Answer 6

okay so dont make the values negative?

Answer 7

No it will easy to you to solve..

Answer 8

it would still be 0

Answer 9

\[-[(2 - 5) + (3-5)+(4-5)+(5-5)+(6-5)+(7-5)+(8-5)]\]

\[-[-3 -2 -1 + 0 + 1 + 2 + 3]\]

Yes the answer will be 0 I think..

Answer 10

i said the answer was 0 and my teacher was like use sigma notation so does she mean to just write it in sigma for like the value of the equation is 0