eq 1 $). The roots are the 8th roots of unity except $ z = \pm 1 $. The roots with positive imaginary parts are $ e^{i\pi/8}, e^{i3\pi/8} $. The maximum imaginary part is $ \sin(3\pi/8) $. Thus, $

Thu, 30 Apr 2026 10:08:39 +0000

Content under review