Hi everybody,
I ran the following code with sympy:
x = Symbol('x')
y = Symbol('y')
z = Symbol('z')
z = x = I*y
solve (z**3 - z**2 - z - 1, z)
But I got the TypeError: "expected Symbol, Function, Power or Derivative
but got <class 'sympy.core.add.Add'>."
What is the problem?
Thank you all!
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