問橢圓上點坐標高度(z坐標)最大值,最小值各為何?
註:上一提問答案有湊合,這題答案未必是有理數喔!
也請以高中生作法求之.
更新1:
Sorry! 短軸一頂點B(1, -2, 2)
更新2:
參考圖http://s585.photobucket.com/albums/ss296/mathmanliu/3D_ellipse01.gif http://s585.photobucket.com/albums/ss296/mathmanliu/3D_ellipse02.gif