Question

Please help, sigma notations please big project 100 points

Answer 1

I believe the answer is:
`3B_i`. (Your equation should look something like this:
`\sum _(i=3)^5\:B_(\left(i\right))` )

Explanation:

`1. \sum _(i=3)^5=\sum _(i=1)^5-\sum _(i=1)`

2.
`=\sum _(i=1)^5B_(\left(i\right))-\sum _(i=1)^2B_(\left(i\right))`

3.=
`=\sum _(i=1)^5B_(\left(i\right))= 5B_{\left(i\right)`

4.
`\sum _(i=1)^2B_(\left(i\right))= 2B_{\left(i\right)`

5.
`5B_(\left(i\right))-2B_(\left(i\right))`

6.
`5B_(\left(i\right))-2B_(\left(i\right))=3B_(\left(i\right))`

7. The answer should be:
`3B_(\left(i\right))`

Hope this helps...