Ptt 大爆卦 | 斜率m - 前往 https://blog.xuite.net/wang620628/twblog/126092446-%28x-h%29%5E2+%2F+A+%2B%28y-k%29%5E2+%2FB+%3D1++%EF%BC%8C%E8%AD%89%E6%98%8E%EF%BC%9A%E6%96%9C%E7%8E%87m%E7%9A%84%E5%85%A9%E6%A2%9D%E5%88%87%E7%B7%9A%EF%BC%9Ay-k%3Dm%28x-h%29%2B%28Am%5E2%2BB%29%5E%281%2F2%29

你即將離開本站

並前往https://blog.xuite.net/wang620628/twblog/126092446-%28x-h%29%5E2+%2F+A+%2B%28y-k%29%5E2+%2FB+%3D1++%EF%BC%8C%E8%AD%89%E6%98%8E%EF%BC%9A%E6%96%9C%E7%8E%87m%E7%9A%84%E5%85%A9%E6%A2%9D%E5%88%87%E7%B7%9A%EF%BC%9Ay-k%3Dm%28x-h%29%2B%28Am%5E2%2BB%29%5E%281%2F2%29

證明：斜率m的兩條切線：yk=m(xh)+(Am^2+B)^(1/2) - 隨意窩

(x-h)^2 / A +(y-k)^2 /B = 1 ， A.B可正可負，證明：斜率m的兩條切線： y-k=m(x-h)+(Am^2+B)^(1/2) y-k=m(x-h)-(Am^2+B)^(1/2) @ @ wang620628.

確定！回上一頁

查詢「斜率m」的人也找了：