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