I forgot the arithmetic series formula and can't find it online
http://www.google.com/#q=+arithmetic+series+formula
Thank-you Ms. Sue
No problem! I'll explain the arithmetic series formula to you.
The formula for the sum of an arithmetic series is:
S = (n/2) * (a + l),
where:
- S is the sum of the series
- n is the number of terms in the series
- a is the first term of the series
- l is the last term of the series
To find the arithmetic series formula on your own in the future, you can follow these steps:
1. Identify the numbers available to you: the number of terms (n), the first term (a), the last term (l), and the sum of the series (S).
2. Examine which of these values are already known. You need at least three of the values (excluding the one you want to find) to use the formula.
3. Determine which value you want to find. Is it the sum (S), the number of terms (n), the first term (a), or the last term (l)?
4. Rearrange the formula based on the value you want to find. For example, if you want to find the sum (S), rearrange the formula to solve for S. If you want to find the first term (a), rearrange the formula to solve for a, and so on.
5. Substitute the known values into the rearranged formula and solve for the unknown value.
By following these steps, you'll be able to find the arithmetic series formula or any other mathematical formula you need.