Question

does the following infinite geometric series diverge or converge? explain 3+9+27+81+...

Answer 1

its geometric; and it seems to be just going to infinity

Answer 2

wen the common ratio r, is
-1<r<1 , sequence converges
else it diverges...here the common ratio is 3 and hence it diverges...

Answer 3

ok so it diverges bc it has a sum or it dosent have a sum?

Answer 4

any sequence will hav a sum,its just that it is finite or infinite.
here,its sum tends to infinity...and hence u can't find it.

Answer 5

k thanks.