Verwende vollst. Induktion und beim Ind.schritt
\( f_{k+1}+f_k=f_{k+2} \) also
\(\left(\begin{array}{ll} 1 & 1 \\ 1 & 0 \end{array}\right)\left(\begin{array}{c} f_{k+1} \\ f_{k} \end{array}\right) =\left(\begin{array}{c} f_{k+2} \\ f_{k+1} \end{array}\right) \)