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Feat: no more round in quadratic roots

This commit is contained in:
Bertrand Benjamin 2019-07-17 09:55:32 +02:00
parent e52fec4057
commit 02214b0f82
1 changed files with 6 additions and 4 deletions
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10
mapytex/calculus/API/tokens/polynomial.py
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@ -95,7 +95,7 @@ class Polynomial(Token):
17
"""
return Expression(self._mo.tree)(value)
def differentiate(self):
""" Differentiate a polynome
@ -284,17 +284,19 @@ class Quadratic(Polynomial):
if self.delta._mo < 0:
return []
elif self.delta._mo == 0:
#return [Expression.from_str(f"-{self.b}/(2*{self.a})").simplify()]
# return [Expression.from_str(f"-{self.b}/(2*{self.a})").simplify()]
return [round(eval(f"-{self.b}/(2*{self.a})"), 2)]
else:
from math import sqrt
roots = [
round(eval(f"(-{self.b}-sqrt({self.delta}))/(2*{self.a})"), 2),
round(eval(f"(-{self.b}+sqrt({self.delta}))/(2*{self.a})"), 2),
str(eval(f"(-{self.b}-sqrt({self.delta}))/(2*{self.a})")),
str(eval(f"(-{self.b}+sqrt({self.delta}))/(2*{self.a})")),
]
roots.sort()
return roots
# -----------------------------
# Reglages pour 'vim'
# vim:set autoindent expandtab tabstop=4 shiftwidth=4: