change mainOp in polynom
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@ -76,11 +76,13 @@ class Polynom(Explicable):
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- a: a Expression. [1, Expression("2+3"), 4] designate 1 + (2+3)x + 4x^2
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- a: a Expression. [1, Expression("2+3"), 4] designate 1 + (2+3)x + 4x^2
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:param letter: the string describing the unknown
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:param letter: the string describing the unknown
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>>> Polynom([1,2,3]).mainOp
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>>> Polynom([1, 2, 3]).mainOp
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'+'
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'+'
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>>> Polynom([1]).mainOp
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>>> Polynom([1]).mainOp
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'*'
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'*'
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>>> Polynom([1,2, 3])._letter
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>>> Polynom([0, 0, 3]).mainOp
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'*'
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>>> Polynom([1, 2, 3])._letter
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'x'
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'x'
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>>> Polynom([1, 2, 3], "y")._letter
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>>> Polynom([1, 2, 3], "y")._letter
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'y'
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'y'
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@ -91,9 +93,9 @@ class Polynom(Explicable):
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if self.is_monom():
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if self.is_monom():
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self.mainOp = "*"
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self.mainOp = op.mul
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else:
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else:
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self.mainOp = "+"
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self.mainOp = op.add
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self._isPolynom = 1
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self._isPolynom = 1
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