x
sin (5)*(pi*I + log(-sin(5)))
$$\left(\log{\left(- \sin{\left(5 \right)} \right)} + i \pi\right) \sin^{x}{\left(5 \right)}$$
2 x
(pi*I + log(-sin(5))) *sin (5)
$$\left(\log{\left(- \sin{\left(5 \right)} \right)} + i \pi\right)^{2} \sin^{x}{\left(5 \right)}$$
3 x
(pi*I + log(-sin(5))) *sin (5)
$$\left(\log{\left(- \sin{\left(5 \right)} \right)} + i \pi\right)^{3} \sin^{x}{\left(5 \right)}$$