# Thread: Series: Definitions and Properties help

1. ## Series: Definitions and Properties help

im 100% sure that 1, 4 are right.. #2 im pretty positive.. 3 and 5 i tried 'true' but it didnt work.. i dont get it

2. Originally Posted by Baatata

im 100% sure that 1, 4 are right.. #2 im pretty positive.. 3 and 5 i tried 'true' but it didnt work.. i dont get it
an infinite geometric series converges if $\displaystyle |r| < 1$ ... diverges if $\displaystyle |r| \ge 1$

3. Originally Posted by skeeter
an infinite geometric series converges if $\displaystyle |r| < 1$ ... diverges if $\displaystyle |r| \ge 1$
i have T, T, T, T, F and its wrong.. is #2 'true'?

4. Originally Posted by Baatata
i have T, T, T, T, F and its wrong.. is #2 'true'?
#2 is false.

nth partial sums are for series, not sequences.

you need to have another look at your text/notes.

5. Originally Posted by skeeter
#2 is false.

nth partial sums are for series, not sequences.

you need to have another look at your text/notes.
ohhh ok now i got it! thanks a lot