Open In App

Python | sympy.subs() method

Improve
Improve
Like Article
Like
Save
Share
Report

With the help of sympy.subs() method, we can substitute the value of variables in the various mathematical functions by using the sympy.subs() method.

Syntax : sympy.subs(source, destination)
Return : Return the same expression by changing the variable.

Example #1 :

In this example we can see that by using the sympy.subs() method, we can substitute the value of existing variable to the new variable.




# import sympy
from sympy import *
  
# symbol declaration
x, y = symbols('x y')
  
gfg_exp = cos(x) + 1
  
# use the method sympy.subs()
gfg_exp = gfg_exp.subs(x, y)
  
print(gfg_exp)


Output :

cos(y) + 1

Example #2 :




# import sympy
from sympy import *
  
# symbol declaration
x, y = symbols('x y')
  
gfg_exp = cos(x) + 1
  
# use the method sympy.subs()
gfg_exp = gfg_exp.subs(x, 0)
  
print(gfg_exp)


Output :

2


Last Updated : 12 Jun, 2019
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads