Mathematics · important
Sum of AP from pth to qth term for JEE
Arithmetic and Geometric progressions
Formula
\(a_p+a_{p+1}+\cdots+a_q=\frac{q-p+1}{2}(a_p+a_q)\)
Variables: \(a_p,a_q\): pth and qth terms.
Conditions: For an arithmetic progression, \(q\ge p\).
Partial sum between two indices.