Python3 コード limit4.py #!/usr/bin/env python3 """(docstring) """ import sympy as sym class MathProblem: """(docstring) """ @staticmethod def print_math_problem(): """(docstring) """ print('関数の極限を求めよ。') print('') class Limit4: """(docstring) """ def __init__(self, expr, num): """(docstring) """ self.__expr = expr self.__num = num def limit_func4(self): """(docstring) """ x = sym.Symbol('x') f = expr