“…For instance, definitions of left and right conformable fractional derivatives and fractional integrals of higher order (ie, of order > 1), the fractional power series expansion and the fractional transform Laplace definition, fractional integration by parts formulas, chain rule, and Gronwall inequality are also provided by him. Moreover, the conformable partial derivative of the order ∈ of the real value of several variables and conformable gradient vector are defined 11,12 ; and a conformable version of Clairaut's theorem for partial derivatives of conformable fractional orders is proved. 11,12 In short time, many studies 13-21 about theory and application of the fractional differential equations are based on this new fractional derivative definition.On the other hand, Euler's theorem on homogeneous functions is used to solve many problems in engineering, science, and finance.…”