File:Arctra2tesT.jpg

Agreement of the primary approximation of function ArcTra by the expansion a point $-1+\pi \mathrm i$.

$\mathrm{ArcTra}(-1+\mathrm i \pi +2t^2)\approx \mathrm{app2}(-1+\mathrm i \pi +2t^2)=\sum_{n=1}{M} c_n t^n$

For this pucture, $M\!=\!10$.