問題詳情
11.當f(x,y)=x2+y2+y2texp(2-y),且F(T,3,z)=f(xy)一z。請問下列哪些選項是正確的?
(A)
(B)
(C)∇F at the point (1,2,-1) is (1,3, -1)T.
(D) The tangent plane to the graphof the function F(x, y) at the point (1, 1,3) is 3(c-1)+ (V-1)- (z-3)=0.
(E) The minimum value of f(c, y) is 0.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增