Question

why is this divergent?

Answer 1

\[\sum_{n=1}^{\infty} \frac{ 1 }{ 4n-1 }\]

Answer 2

To me, it converges

Answer 3

are you sure its divergent ?

Answer 4

yes. It says use comparison test

Answer 5

we use a website to submit our homework. It gives us direct answers. Said wrong for convergent and hint: use comparison test

Answer 6

You can try b_n = 1/n

Answer 7

then 1/n would = harmonic, which is always diverent?

Answer 8

well I know a multiple of 4 is not going to change the function as n ---> infinity

Answer 9

TheDream. You are correct with the 1/n and harmonic

Answer 10

Ok is that all you had to do for the problem?

Answer 11

thank you. yes. I didnt see the harmonic til you posted that

Answer 12

No problem