Page 26 - Math SL HB Sem 1

SEOUENCI] ANT) SERIES

Example 2: Find the sum of the first n terms of geometric series
,.(:).(fi.

Find the smallest number of term n so that the sum ofthese series is grcater
than 20

t0
Example 3: Evaluate
lft.OS)'
i=t

Example 4: Find the sum to n terms of the following series

(a)x+x2+xr+... (b) I -v *y'- ...

)-t4