/ 2 \
-cot\-1 + x*cos (3)/
---------------------
2
x + 5*x
−x2+5xcot(xcos2(3)−1)
/ 2\
| / -3*I 3*I\ |
| |e e | |
-cot|-1 + x*|----- + ----| |
\ \ 2 2 / /
-----------------------------
2
x + 5*x
−x2+5xcot(x(2e−3i+2e3i)2−1)
-cot(-1 + x*(exp(-3*i)/2 + exp(3*i)/2)^2)/(x^2 + 5*x)