c2--1=0 =1±√s MATLAB p=1-1-11(x)=x2-x-1 I=roots(p) 0.61803398874989 1.61803398874989 C(1)*X^N+….+C(N)*+C(N+1)=01 1 −1 =   1 0 2  − − = 2 1 5  = p = [1 –1 –1]; r = roots(p); ( ) 1 2 p x = x − x − r = -0.61803398874989 1.61803398874989 C(1)*X^N + ... + C(N)*X + C(N+1) = 0