Question

help please !
1-when do i use the absolute value to determine wither a sequence is diverge or coverage?

Answer 1

okay do you have answer chocies love

Answer 2

i have a problem

\[an =(-1)^(n-1) *n/n^2+1\]

Answer 3

-1 is raised to power n-1

Answer 4

okay

Answer 5

Is this the formula?
\[a_n=(-1)^{n-1}\frac{n}{n^2+1}\]

Answer 6

yes

Answer 7

Do you know squeeze theorem?

Answer 8

yes

Answer 9

Find two functions to squeeze it. Hint: look at the sequence.

Answer 10

i got the answer.

thanks alot