Question

Find S_5 for the given geometric series.

a_1 = .23 a_5 = 4022.714375 r = 11.5

Answer 1

know the formula for sum of geometric series ?

Answer 2

for r>1 ?

Answer 3

\[Sn=\frac{ a(r^n-1) }{ r-1 }\]

Answer 4

Plug in the Values and Solve

Answer 5

oh okay thank you

Answer 6

is the n in s_n = the n in r^n?

Answer 7

yes

Answer 8

thanks guys