Asked by sh
Write the expression without using the factorial symbol.
(n+1)!/(n-1)!
my work:
(n+1)!/((n+1)(n-1)!)
=1/(n-1)?
Thanks in advance.
(n+1)!/(n-1)!
my work:
(n+1)!/((n+1)(n-1)!)
=1/(n-1)?
Thanks in advance.
Answers
Answered by
Reiny
close
(n+1)!/(n-1)!
= (n+1)(n)(n-1)!/((n+1)(n-1)!
= n
(n+1)!/(n-1)!
= (n+1)(n)(n-1)!/((n+1)(n-1)!
= n
Answered by
sh
hmm..the answer key says its n(n+1), maybe the answer key is wrong
Answered by
sh
wait, nevermind, I got it :)
thanks :P
thanks :P
Answered by
Reiny
You know what?
I looked at "my work" and assumed that was the starting question.
so here it goes once more
(n+1)!/(n-1)!
= (n+1)(n)(n-1)!/n-1)!
= n(n+1)
sorry
I should be more careful when reading questions.
I looked at "my work" and assumed that was the starting question.
so here it goes once more
(n+1)!/(n-1)!
= (n+1)(n)(n-1)!/n-1)!
= n(n+1)
sorry
I should be more careful when reading questions.
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