### What is the blue phi?

Give it up, no one will ever answer this question. Bluuuuuuuuue Phi!!!!!!!!!!!! It started as a call that members of Phi Beta Sigma used to each other. Sometimes it was used as a password to get into places or as a call for help. Later on this became a nickname for the Phi Beta Sigma/ Zeta Phi Beta family. They were just referred to as the Blue Phi. It started out as all black men…

### How is the golden ratio worked out?

(a+b)/a=a/b=phi (the golden ratio, as defined) (a+b)/a=phi (we'll solve this equation) 1+b/a=phi (just changing the form of the left side a little) 1+1/phi=phi (a/b=phi so b/a=1/phi) phi+1=phi2 (multiply both sides by phi) phi2-phi-1=0 (rearrange) From here, we can use the quadratic equation to find the positive solution: phi=(-b+√(b2-4ac))/(2a) phi=(1+√(1+4))/2 phi=(1+√5)/2≈1.618