SolveByFlatteningAPowerOfAnExponential​(AngouriMath.​Entity,​AngouriMath.​Entity.​Variable,​System.​Boolean)

A power of an exponential of x with a positive constant base, written as the
exponential of the product: (e^x)^(1/3) is e^(x/3) and (3^(3x))^(1/4) is 3^(3x/4), exactly, since the base is positive; and it is only in that
spelling that the exponential rules read them. Timofeev's
(cos(x/2) + sin(x/2))/(e^x)^(1/3) and cos(3x/2)/(3^(3x))^(1/4). And a whole
power of a constant times one, (-e^(-b x))^2, as the constant's power times the
exponential of the multiple, whatever the constant is.