sum of the terms of an arithmetic sequence
- Let (`u_(n)`) be an arithmetic sequence of common difference -4, and of first term `u_(0)= 4`. Let S be the sum of `u_(1)` to `u_(16)`. S=`u_(1)`+`u_(2)`+`u_(3)`+`. . .`+`u_(16)`.
- Compute the number of terms in S.
- Compute S.
Course reminder : Numerical sequences