Python | Sympy equation() method

Python | sympy.Function() method

Last Updated : 19 Jul, 2019

With the help of sympy.Function() method, we can find the various functions in the whole mathematical expression like f(x), sin(x), log(x), etc by using sympy.Function() method.

Syntax : sympy.Function() Return : Return the list of functions in mathematical operation.

Example #1 : In this example we can see that by using sympy.Function() method, we are able to find the function in the mathematical operation.

Python3 1=1

# import sympy
from sympy import * 

x, y = symbols('x y')
f = Function('f')

# Use sympy.Function() method
gfg = (f(x) + 2 * tan(y + I * pi) + log(2 * x)).atoms(Function)
  
print(gfg)

Output :

{f(x), tan(y + I*pi), log(2*x)}

Example #2 :

Python3 1=1

# import sympy
from sympy import * 

x, y = symbols('x y')
f = Function('f')

# Use sympy.Function() method
gfg = (2 + 3 * cos(y) + 5 * log(2 * x)).atoms(Function)
  
print(gfg)

Output :

{cos(y), log(2*x)}

Python | Sympy equation() method

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