推 jacky7987 :我硬幹也是這個答案 05/12 23:23
→ wyou :z(bar) = iz。其中 z(bar) 是 z 對實軸的對稱點, 05/12 23:30
→ wyou :iz 則是將 z 逆時針旋轉 90 度,畫圖可知 z 的幅角 05/12 23:31
→ wyou :是 135 度或是 -45 度。 05/12 23:32
→ znmkhxrw :其實同除根號2 發現z逆轉45度=zbar順轉45度 05/12 23:39
→ znmkhxrw :能符合這種的也只有斜率-1的line 05/12 23:39
推 thisday :同除根號2 05/12 23:40
→ thisday :z大先推了!! 05/12 23:40
→ znmkhxrw :可是 z逆轉45度=zbar順轉45度 ,符合的只有斜率-1的線 05/12 23:41
→ znmkhxrw :這句話好不顯然XD 05/12 23:41
推 vanillaXleft:z=x+yi =>(1+i)(x+yi)-(1-i)(x-yi) 05/12 23:54
→ vanillaXleft:=>(x+xi+yi-y)-(x-xi-yi-y)=xi+xi+yi+yi=2i(x+y)=0 05/12 23:56
→ vanillaXleft:=>x+y=0 05/12 23:56
→ GameKnight :z/z(bar) = i => iz = z(bar) 05/12 23:57
→ GameKnight :發現跟二樓重複了 05/12 23:57
→ annzi :謝謝樓上 05/13 09:46