What's wrong with this function to solve cubic equations?

Question

I am using Python 2 and the fairly simple method given in Wikipedia\'s article \"Cubic function\". This could also be a problem with the cube root function I have to define

Answer 1

You are using integer values - which are not automatically converted to floats by Python. The more generic solution will be to write coefficients in the function as float numbers - 18.0 instead of 18, etc. That will do the trick An illustration - from the code:

>>> 2**(1/3)
1
>>> 2**(1/3.)
1.2599210498948732
>>>