maximum
4 4
x +y-4xy+1
f(x,y)=e The maxium of f(x,y) occurs at
a(0,0) b(1,1) c(1,-1) d(-1,-1) e(0,1)
我帶進去算最大明明就是c 答案給a
答案是用偏微去找臨界點 可式通常問題目只寫maxium 不就是要找絕對最大值嗎??
偏微分是找局不極大極小吧
麻煩囉
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