With the help of sympy.rewrite() method, we can represent any mathematical function in terms of another function.
Syntax: expression.rewrite(function)
Parameters:
expression – It is mathematical expression which is to be represented by another function.
function – It is the mathematical function used to rewrite the given expression.Returns: Returns a mathematical expression corresponding to the input in terms of specified function.
Example #1:
# import sympy from sympy import * x = symbols('x') expr = tan(x) print("Expression = {}".format(expr)) # Use sympy.rewrite() method expr_in_terms_of_sin = expr.rewrite(sin) print("Expression in terms of sin() : {}".format(expr_in_terms_of_sin)) |
Output:
Expression = tan(x) Expression in terms of sin() : 2*sin(x)**2/sin(2*x)
Example #2:
# import sympy from sympy import * x = symbols('x') expr = factorial(x) print("Expression = {}".format(expr)) # Use sympy.rewrite() method expr_in_terms_of_gamma = expr.rewrite(gamma) print("Expression in terms of gamma() : {}".format(expr_in_terms_of_gamma)) |
Output:
Expression = factorial(x) Expression in terms of gamma() : gamma(x + 1)
