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anonymous
 5 years ago
does anyone know how 2n+2! becomes (2n+2)(2n+1)
anonymous
 5 years ago
does anyone know how 2n+2! becomes (2n+2)(2n+1)

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i guess it must b (2n +2)! ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(2n+2)(2n+1) (2n)....1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(2n+2)!= (2n+2)(2n+1)!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0on cramster one of the problem shows it changes from (2n+2)! and becomes (2n+1)(2n+2) with no factorial sign behind it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0there is a facatorial behind it......

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i mean they don't show it like this (2n+2)(2n+1) (2n)....1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I meant that u keep decreasing by 1 until u reach 1 another way of writing it (2n+2)(2n+1) (2n)...3.2.1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yah they dont show it decreasing it stops after 2n+1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes but there must be a factorial with it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0As far as I know about factorials ...there should be...I could be wrong

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0is there anyway you can look at the problem on cramster

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0u can check on wolframalpha.com

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0there must be factorial with it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0there has to be a factorial behind it, unless there is something else about your problem... cramster sometimes has mistakes

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the things is my teacher did the same thing so im confused

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the only way the factorial can drop out is if it cancelled out in a fraction

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0then check did u post the right question?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0this is the actual problem determine of this series converges or diverges\[\sum_{n=1}^{\infty} (n!)^2/(2n) !\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0n u applied some test for the convergence of series?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i did but i didnt correct answer if someone can please show me how to do this it can help me with the rest of my problems

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0sigh i hate it when people post half the question... thigns cancel and become (n+1)^2/(2n+2)(2n+1)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes it converges, so you use ratio test... an+1/an= [ ((n+1)!)^2/(2(n+1))! ]/ [ (n!)^2/(2n)! ] flipping fractions to get 1 whole one.. (2n)!(n+1)!(n+1)!/(n!)(n!)(2n+2)! which is where your question arises, like I said, the only reason the factorial disappeared is cause it got cancelled, which you always want to do when doing ratio test, so you simply keep pulling your factorials apart until they can cancel so on top (n+1)!=(n+1)(n!), which you do twice to get rid of both the n! on the bottom then on the bottom you have (2n+2)! so you pull the factorial apart twice to get (2n+2)(2n+1)(2n)! then the (2n)! can cancel with the one on top and you get left with (n+1)^2/(2n+2)(2n+1). take the limit and it should be 1/4 so it converges

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes i was able to catch my mistake thank you very much. i wanted to know how does 2n! decrease

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0does it become (2n)(2n1)(2n2)..1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0hey thank u for ur help im gonna become a fan
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