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we have the follow cell in jupyter kernel python3:
from sympy.interactive.printing import init_printing
from sympy.core.symbol import symbols
from sympy.geometry.util import idiff
init_printing(use_unicode=True)
x = symbols('x')
y = symbols('y')
then just run:
eq = x ** 2 - x * y + y ** 2 - 3
eqd1 = idiff(eq, y, x)
eqd1
we get the correct answer: 2x-y / x-2y
but if run the code:
eqd2 = idiff(eqd1, y, x)
eqd2
we get: x/y but the answer realy is: 18/(x-2y)² or 6(x²-xy+y²)/(x-2y)³
x/y and 18/(x-2y)² don't looks like a equal expression or factorial one of another
Someone can help? Thanks.
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