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jordan8037
18.06.2021 •
Mathematics
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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Ответ:
3= 3 ticks above 0
2.25= 2.25 ticks above 0
opposite of 4= 4 ticks below 0
-(-1 1/2)= 1.5 ticks above 0
<| - - - | - - - | - - - | - - - | - - - | - - - | - - - | - - - |>
- 4 0 1.5 2.25 3
-4 = 5.5 ticks below 1.5; 6.25 ticks below 2.25; 7 ticks below 3
1.5= 5.5 ticks above -4; 0.75 ticks below 2.25; 1.5 ticks below 3
2.25= 6.25 ticks above -4; 0.75 ticks above 1.5; 0.75 ticks below 3
3= 7 ticks above -4; 1.5 ticks above 1.5; 0.75 ticks above 2.25