So, how do I solve this to find the value of n ?

Un = (-1)^n (n / n + 4) and I know that Un = 7 / 9 ?

So do you times (-1)^n and ( n / n + 4) ??

Someone help me out here, with explanation please!

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- September 27th 2008, 10:43 AMMathematixSequences and series..
So, how do I solve this to find the value of n ?

Un = (-1)^n (n / n + 4) and I know that Un = 7 / 9 ?

So do you times (-1)^n and ( n / n + 4) ??

Someone help me out here, with explanation please! - September 27th 2008, 10:55 AMbkarpuz
- September 27th 2008, 12:34 PMMathematix
^ From that, I need to know how to find the value of n.

- September 27th 2008, 01:55 PMbkarpuz
- September 27th 2008, 02:05 PMJhevon
you are somewhat vague, Mathematix, but if bkarpuz's last post accurately said what you want, then you must solve for . and note that must be even. so if you get an odd number, you are wrong