Comment #2 on issue 3223 by [email protected]: degree((x+1)**10000) takes
too long
http://code.google.com/p/sympy/issues/detail?id=3223
But watch out if it's not a "polynomial":
-(exp(x)).subs(x, 1/x).leadterm(x)[0]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "sympy\core\expr.py", line 2536, in leadterm
should have been free of x but got %s""" % (self, x, c)))
ValueError:
cannot compute leadterm(exp(1/x), x). The coefficient should have been
free of x but got exp(1/x)
exp(x).subs(x, 1/x).as_leading_term(x).subs(x, 1/x)
exp(x)
((exp(x)+x/2)**10).subs(x, 1/x).as_leading_term(x).subs(x, 1/x)
exp(10*x)
_.as_coeff_exponent(x)
(exp(10*x), 0)
((x**2+x/2)**10).subs(x, 1/x).as_leading_term(x).subs(x, 1/x)
x**20
_.as_coeff_exponent(x)
(1, 20)
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