Contact us
Choose a category below so we can get back to you as quickly as possible.
可以容易得到,z的模為1,複平面上,其方向為第一象限角平分線.那麼,可以得知,z的乘方,其模都為1,且有z^n=-z^(n+4)所以,後面16項,其和為0,消項後得1+z+z^2+…..+z^20=1+z+z^2+z^3+z^4=z+z^2+z^3=(1+i)/(根號2)+i+(-1+i)…
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.