Author: 藍邦偉  老師

F_1=1,F_2=1,F_n_+_2=F_n+F_n_+_1_

f(x) = 2.0 * sin(x) + cos(2.0 * x) + 2.0
F = Sequence(1.0 / sqrt(5.0) * (((1.0 + sqrt(5.0)) / 2.0)^(n) + ((1.0 - sqrt(5.0)) / 2.0)^(n)), n, 1.0, 100.0)
n = 20 (slider from 1 to 20, step 1)