To write it out a bit clearer: Un+1 = (Un-1)^{2 }, U1=k , U2 +1=U1 Find the possible values of k. I really don't know how to approach this question. Help and advice appreciated. Thanks age
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Originally Posted by agehayoshina To write it out a bit clearer: Un+1 = (Un-1)^{2 }, U1=k , U2 +1=U1 Find the possible values of k. I find this post hard to read. Assuming that $\displaystyle U_{n+1}=(U_n-1)^2~\&~U_1=k$ and $\displaystyle U_2+1=U_1$ is correct, then $\displaystyle (k-1)^2+1=k.$
Sorry, formatting isn't my forte. and thanks! this helped.
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