given N data points {x_i,y_i}, where i=1,2,3,...,N (1)find the coeffiecient of continues fraction {a_n} ,where n=1,2,3,...,N (2)find the nominator and denominator polynomial coefficients {A_n,B_n} ,where n=1,2,3,...,N (3)given a new value x_new, find y_new
they are all complex numbers in general.