Question

a) Calculate the following (geometric) sums and series, respectively.
ii) \(\Large \sum_{n=2}^{\infty}3^{1-n}\)

Answer 1

a=1/3
q=1/3

Answer 2

can you do the complete solution pls, i have also some solution but i must be sure its correct, tomorrow i must give it up by mentor and its important

Answer 3

ok
\[\huge \sum_{n=2}^{\infty} 3^{1-n}=\frac{1}{3}+\frac{1}{3^2}+\frac{1}{3^3}+... \]

Answer 4

yes i have the same one, can i give like that to by mentor ?

Answer 5

am i right?

Answer 6

what you think is it possible to give like that to the mentor ?

Answer 7

no

Answer 8

what we need to add more ?

Answer 9

for geometric series like
\[\large a+aq+aq^2+aq^3+...\]
we have
\[\huge s=\frac{a}{1-q}\]

Answer 10

hmm ...

Answer 11

ook

Answer 12

u just recognize a and q

Answer 13

ok thanks

Answer 14

welcome