Cardano’s formula

Cardano s formula The roots of a polynomial of degree n = 3 are given by the cubic formula. The number of real roots of a cubic equation depends on the sign of the polynomial discriminant... 

The solutions of cubic EOS can be obtained iteratively or analytically using Cardano s formula (see Appendix C, AlO and Example 2.9). As it does not contain any iteration, Cardano s formula is very convenient to use. However, it has been shown that it is by far not the fastest option [45]. 

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