Re: [微積] 問一題微積分求極值
※ 引述《dondonmike (我很單純)》之銘言：
: f(x,y)=x^4+y^4-4xy+2
: on the set D={(x,y) 0<x<3,0<y<2}
: 求 local max min還有 absolute max min
: 上面那個 x y的範圍是小於等於
: 不好意思我不會打小於等於的符號
: 請問這題怎麼算？
請問我這題用了大大們的方法算出來的D=0
好像判別失敗了，請問該怎麼算才對....?
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