Fractional calculus can be defined as the generalization of classical calculus to order of integration and differentiation not necessary integer. The theory of derivatives of non-integer order goes back to the Leibniz’s note in his letter to l’Hospital [1], dated 30 September 1695, in which the meaning of the derivative of order one half is discussed. The question raised by Leibniz for a non-integer-order derivative was an ongoing topic for more than 300 years.