MathDB
2000 HMMT RMT Team #14

Source:

March 8, 2024
algebra

Problem Statement

Define a sequence <xn><x_n> of real numbers by specifying an initial x0x_0 and by the recurrence xn+1=1+xn1xnx_{n+1}=\frac{1+x_n}{1-x_n}. Find xnx_n as a function of x0x_0 and nn, in closed form. There may be multiple cases.