Hello everyone,
I have this problem: and I am trying to do the root test, what is stopping me is that I don't know what to do with factorial when I take the soot of the summation.
Thanks,
No, I can use either the ratio or root test, I just assumed that the root test would be easier. Why is the ratio test easier?
Thanks
Please note that you cannot use either the ratio test nor the root test here.
Both of those test are for positive series.
This series is alternating.
.
Look at this page.
Haha, that's quite funny because that's a practice problem my prof gave for the Ratio/Root test. I never learn't that these were for positive functions only. I did learn that you take the absolute value of the series, so wouldn't it work in that case because the series isn't actually negative?