Question

f(x)=2x-1
determinar x e y

Answer 1

F(x) = y = 0
F(x) =2x-1 ---logo:
y = 2x -1= 0
     2x = 1
       x = 1/2

F(x) = 2x-1
F(1/2) = 2(1/2) -1
F(1/2) = 1 - 1
F(1/2)  = 0

S=(1/2 , 0)