Using the count() method in the sympy module, we can count the number of variables used in the mathematical function. count() method returns the number of variables used in the mathematical function.
Syntax : sympy.count(x) Return : the count of variables.
Code #1: With the help of the below examples, we can clearly understand that using sympy.count() method we can count the number of variables in a given expression.
Python3
# importing sympy libraryfrom sympy import *# taking symbolsx, y, z = symbols('x y z')# calling count() method on expressiongeek = sqrt((x + 1)**2 + x).count(x)print(geek) |
Output:
2
Code #2:
Python3
# importing sympy libraryfrom sympy import *# taking symbolsa, b = symbols('a b')# calling count() method on expressiongeek = (log(a) + log(b) + log(a)*log(1 / b)).count(log)print(geek) |
Output:
4
Code #3:
Python3
# importing sympy libraryfrom sympy import *# taking symbolsa, b = symbols('a b')# calling count() method on expressiongeek = (log(a * b**(1 - log(a)))).count(b)print(geek) |
Output:
1
