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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Originally Posted by Mathematix 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! What is the question exactly? I did not understand anything about it. You have and what do you want to solve? It seems is already in an explicit form.
^ From that, I need to know how to find the value of n.
Originally Posted by Mathematix ^ From that, I need to know how to find the value of n. Are you asking for which value holds? If so, . To find the solution, first consider then for . In the first case, you will find ( ) and in the second one .
Last edited by bkarpuz; Sep 27th 2008 at 01:12 PM.
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
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