sum of the terms of a geometric sequence
- Let (`u_(n)`) be a geometric sequence of common ratio 2, and of first term `u_(0)= -1 `. Let S be the sum of `u_(2)` to `u_(11)`. S=`u_(2)`+`u_(3)`+`u_(4)`+`. . .`+`u_(11)`.
- Calculate `u_(2)`
- Calculate `u_(11)`.
- Deduce S.
Course reminder : Numerical sequences