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I suck at calculus (ratio test) NEVERMIND I GOT IT

Food?Food? Registered User regular
edited November 2007 in Help / Advice Forum
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I have tried it numerous times and I keep getting 10/7.

Everything cancels out except (8n^2 + blah blah)/(8n^2 + blah + blah) and (10/-7). This is all in an absolute value sign, so 10/-7 becomes 10/7. Since I'm dealing with limits, 8n^2/8n^2 is the same as 8/8, which is 1. 1 times 10/7 is 10/7. Where am I going wrong?

Edit: Wow, nevermind - I was doing An/An+1 instead of vice versa. Ignore this thread.

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  • Big DookieBig Dookie Smells great! DownriverRegistered User regular
    edited November 2007
    Yeah, I was gonna say, I'm getting 7/10 when I work it out, which means it converges absolutely. But I guess you got it, so nevermind. Although this thread was useful for me to dig up convergence tests from the cobwebs of my memory, so it wasn't for nothing.

    I used to be a master at these things, but it's been a while.

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