$$\log{\left(\operatorname{acos}{\left(e \right)} \right)} \operatorname{acos}^{x}{\left(e \right)}$$
x 2
acos (E)*log (acos(E))
$$\log{\left(\operatorname{acos}{\left(e \right)} \right)}^{2} \operatorname{acos}^{x}{\left(e \right)}$$
x 3
acos (E)*log (acos(E))
$$\log{\left(\operatorname{acos}{\left(e \right)} \right)}^{3} \operatorname{acos}^{x}{\left(e \right)}$$