[Science and technology calculation by Python] (Partial) differential, mathematical formula, sympy

Contents

Find the derivative of the elementary function using sympy.

code

from sympy import *      #Imoprt all features from the sympy library
sym.init_printing()      #Format output

x=Symbol('x')                  #letter'x'Is defined as the variable x
y=Symbol('y')                 #letter'y'Is defined as the variable y


#differential
diff(sin(x),x)  #sin(x)Differentiation of
diff(exp(x),x)   # e^Differentiation of x

#Higher derivative
diff(x**4+x**3,x,2)  # x^4+x^2nd derivative of 3


#Partial differential
diff(x**2+x*y+2*y**2,x)  # x^2+xy+2y^Partial derivative of 2 by x


#When leaving a differential symbol
Derivative(y(t),t)

result

From top to bottom, it is as follows.