Cách lấy đạo hàm trong python

Với sự giúp đỡ của sympy. Derivative[], chúng ta có thể tạo một dẫn xuất chưa được đánh giá của một biểu thức SymPy. Nó có cùng cú pháp với phương thức diff[]. Để đánh giá một đạo hàm chưa được đánh giá, hãy sử dụng phương thức doit[]

cú pháp. Đạo hàm [biểu thức, biến tham chiếu]

Thông số.
expression – Một biểu thức SymPy có đạo hàm chưa đánh giá được tìm thấy.
biến tham chiếu – Biến đối với đạo hàm được tìm thấy.

trả lại. Trả về một đạo hàm chưa đánh giá của biểu thức đã cho

Ví dụ 1




Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
2

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
3
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
4
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
5
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
7

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
8
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
9
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
0
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
1
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
2

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
3
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
9
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
5_______26
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
8
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
9
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
8
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
22
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
9
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
22
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
27

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
28
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
29____230
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
31
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
32
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
33

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
34

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
35

________ 236 ________ 29 ________ 238

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
39

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
28
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
29____242
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
31
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
32
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
45

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
28
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
29____248
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
31
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
32
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
51

đầu ra

Expression : x**2 + y**3 + 2*y 
Derivative of expression with respect to x : Derivative[x**2 + y**3 + 2*y, x]
Value of the derivative : 2*x 

Ví dụ #2




Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
2

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
3
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
4
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
5
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
7

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
8
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
9
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
0
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
1
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
2

Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
3_______29
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
22
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
8
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
5_______26
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
8
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
9
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
8
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
22
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
5
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
9
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
5
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
27
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
22
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
6
Expression : x**3*y**3 + x**2*y**2 + 2*x*y 
Derivative of expression with respect to x : Derivative[x**3*y**3 + x**2*y**2 + 2*x*y, x, y]
Value of the derivative : 9*x**2*y**2 + 4*x*y + 2 
27

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