The set a is composed of the solutions of the equation AX & sup2; - 2x + 1 = 0. If the set a is an empty set, the value range of the real number a is obtained X & sup2; is the square of X

The set a is composed of the solutions of the equation AX & sup2; - 2x + 1 = 0. If the set a is an empty set, the value range of the real number a is obtained X & sup2; is the square of X

In the first case, a = 0, the set a = {1 / 2} is not an empty set
In the second case, a ≠ 0, 4-4a1 should be satisfied
To sum up, the value range of real number a is {a | a > 1}