Let `A = {-1,0,1,2}, B = {-4,-2,0,2} and f , g : A rarr B` be functions defined `f(x) = x^(2)-x, x inR and g(x) = 2 |x-(1)/2|-1,x inR`. Are f and g equal ? Justify your answer.
(Hint : One may note that two functions f : `A rarr B and g : A rarr B ` such that f (a) = g(a) `A a inA,` are called equal functions).

Answer

f and g are equal function.