When 0<x<1 → ⌈x⌉=1 →f(x)=2
when x=0 → ⌈x⌉=0 →f(x)=0
when -1 <x<0 → ⌈x⌉=0 →f(x)=0
when x= -1 → ⌈x⌉= -1 →f(x)= -2
when -2<x<-1 → ⌈x⌉= -1 →f(x)= -2
The quadratic has one root with multiplicity 2 if the discriminant is 0, which is
(That is, for a quadratic , the discriminant is .)
Set the discriminant equal to 0 and solve for :
Answer:
108
Step-by-step explanation:
x = (n - 2)180/n
n = 5
x = (3)(180)/5
x = 108