def leadterm(self, x):
"""
Returns the leading term a*x**b as a tuple (a, b).
Example:
>>> from sympy.abc import x
>>> (1+x+x**2).leadterm(x)
(1, 0)
>>> (1/x**2+x+x**2).leadterm(x)
(1, -2)
Note:
self is assumed to be the result returned by Basic.series().
"""
from sympy import powsimp
x = sympify(x)
c,e = self.as_leading_term(x).as_coeff_exponent(x)
c = powsimp(c, deep=True, combine='exp')
if not c.has(x):
return c,e
raise ValueError("cannot compute leadterm(%s, %s), got c=%s" % (self, x, c))
def leadterm(self, x):
"""
Returns the leading term a*x**b as a tuple (a, b).
Example:
>>> from sympy.abc import x
>>> (1+x+x**2).leadterm(x)
(1, 0)
>>> (1/x**2+x+x**2).leadterm(x)
(1, -2)
Note:
self is assumed to be the result returned by Basic.series().
"""
from sympy import powsimp
x = sympify(x)
c, e = self.as_leading_term(x).as_coeff_exponent(x)
c = powsimp(c, deep=True, combine='exp')
if not c.has(x):
return c, e
raise ValueError("cannot compute leadterm(%s, %s), got c=%s" % (self, x, c))
def leadterm(self, x):
x = Basic.sympify(x)
c,e = self.as_leading_term(x).as_coeff_exponent(x)
if not c.has(x):
return c,e
raise ValueError("cannot compute ldegree(%s, %s), got c=%s" % (self, x, c))