cos 2pi 在 For $a=\cos(2\pi/n)$, show that $[\mathbb{Q}(a) - Math Stack ... 的評價 We are new to abstract algebra. This is a question on a difficult project involving cyclotomic polynomials and their irreducibility. We know that the degree of ... ... <看更多>
cos 2pi 在 [問題] A cos(2 pi f1 t + theta) 傅立葉轉換?? - 看板comm_and_RF 的評價 目前知道A cos(2 pi f1 t) 傅立葉轉換後會變成兩根高度0.5A的脈衝位於+f1和-f1 那麼加上了一個角度A cos(2 pi f1 t + theta) ... <看更多>
