Question

Attempt ratio test in this problem:

Answer 1

\[\sum_{n=1}^{nifty} \frac{ 6n }{ (2n+6)5^{n+4} }\]

Answer 2

6^n not 6n

Answer 3

limit as n goes to infinity

Answer 4

wow... the sum from 1 to nifty... that's cool

Answer 5

haha i clicked infinity... not sure why it did that

Answer 6

you need a space or equals between the n and infinity

Answer 7

I know that I'm supposed to do an+1/an and then i multiply by the reciprocal

Answer 8

so then stuff are supposed to cancel out

Answer 9

does 6^(n+1) and 6^n cancel out?

Answer 10

..

Answer 11

No. They do not

Answer 12

Those terms are completely different from each other

Answer 13

ok. i was thinking that just the 6ns would cancel out and there would be a term left on the top. I'm just not sure what cancels..

Answer 14

not sure what to do:/

Answer 15

@dan815