Question

f(x) = (x - 2)^1/2 ; f(27), f(2), f(1)

Answer 1

F(x) = (x - 2)^1/2 ;
f(27) = (x - 2)^1/2 = (27-2)^1/2= 25^1/2 ==> V25 = 5 
f(2) = (x - 2)^1/2 = (2-2)^1/2= 0^1/2 ==> V0 = 0 
f(1)= (27-2)^1/2 = (1-2)^1/2= -1^1/2 ==> V-1 = não existe rais negativa.