Infinite Series (Leaving Cert Mathematics): Flashcards

Contribute less to total sum as $n$ increases

$|r| < 1$

$S_\infty = \frac{a}{1-r}$

Digit repeats to infinity

Dot on top of repeating digit(s)

Use sum to infinity on repeating part

$32$

Geometric series to infinity

$\frac{11}{90}$