精華區beta Math 關於我們 聯絡資訊
Find the extreme values of f(x,y) = x^3 - x + y^2 - 2y on the closed triangular region with vertices at (-1,0),(1,0),and(0,2). 想請教高手 謝謝~ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 58.115.134.177
math1209 :把 3 角區域畫出來, 分內部與邊界, 再進一步去分析 12/03 11:06
math1209 :是否為極值點. 12/03 11:06