Cho hàm số f (x, y)=
a) Tính vi phân cấp 1 của hàm số tại
b) Tính các đạo hàm riêng cấp 2 c...
![subject](/tpl/images/cats/mat.png)
Mathematics, 18.06.2021 08:40 myla18jabbar
Cho hàm số f (x, y)=
a) Tính vi phân cấp 1 của hàm số tại
b) Tính các đạo hàm riêng cấp 2 của hàm số tại
c) Chứng minh rằng không tồn tại ![\lim_{(x,y) \to \ (0,0)} f (x,y)](/tpl/images/2407/9396/60f82.png)
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