Series (Grade 12 NSC Matric Mathematics): Quizzes

The sum of terms in a sequence

$S_n$

$|r| < 1$

Below the sigma symbol

$5$

$\sum_{i=1}^{n} a_i + \sum_{i=1}^{n} b_i$

$c \cdot \sum_{i=1}^{n} a_i$

$S_n = \frac{n}{2}(2a + (n-1)d)$

$S_n = a \frac{1 - r^n}{1 - r}$

$S_∞ = \frac{a}{1 - r}$