Which of these is the Binet's formula for the Fibonacci sequence Fn=Fn−1+Fn−2,F0=0,F1=1F_n = F_{n-1} + F_{n-2}, F_0=0, F_1=1Fn=Fn−1+Fn−2,F0=0,F1=1?
Fn=ϕn+(1−ϕ)n5F_n = \frac{\phi^n + (1-\phi)^n}{\sqrt{5}}Fn=5ϕn+(1−ϕ)n
Fn=ϕn−(1−ϕ)n5F_n = \frac{\phi^n - (1-\phi)^n}{\sqrt{5}}Fn=5ϕn−(1−ϕ)n
Fn=ϕn−ψn2F_n = \frac{\phi^n - \psi^n}{2}Fn=2ϕn−ψn
Fn=(1+5)n−(1−5)n2F_n = \frac{(1+\sqrt{5})^n - (1-\sqrt{5})^n}{2}Fn=2(1+5)n−(1−5)n