so, still confused with chapter 9 stuff..
i'll just go over what i know.
so if you are given something, (idk if it matters if it is a sequence or a series).. you automaticaly take the nth term test.
so take lim as n goes to infinty. if you get 0, you have to move on to take another test. if not, it automatically diverges. the next tests are:
geometric, p-series, or integral teset.
nowwww, i know geometric is when you have an exponent, and p-series is when you haev a fraction. that's about all i know. therefore idk how to choose one, what to do after i choose one, or anything like that. i'm just so lost, idk why. i've been having a bad past few weeks.
anything else that i didn't mention in here, please explain to me. i think i need a tutor for this chapter or something.. idk.
I DO NOT UNDERSTAND:
direct comparison test
limit comparison test
^^i completely failed that quiz. ha
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I can explain limit comparison..you basically take the problem in the question and compare (or replace) with a simpler equation. So if you have 1/ n+1 you'd compare it to 1/n. Then you divide the "fixed" equation into the real equation and then take the limit. Folllow your limit convergence and divergence rules and there you go!
ReplyDeleteAs for direct comparison..i'll leave that to someone else..haha