# Solution of Cubic and Quartic Equations

Formalized Mathematics (2009)

- Volume: 17, Issue: 2, page 117-122
- ISSN: 1426-2630

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topMarco Riccardi. "Solution of Cubic and Quartic Equations." Formalized Mathematics 17.2 (2009): 117-122. <http://eudml.org/doc/267002>.

@article{MarcoRiccardi2009,

abstract = {In this article, the principal n-th root of a complex number is defined, the Vieta's formulas for polynomial equations of degree 2, 3 and 4 are formalized. The solution of quadratic equations, the Cardan's solution of cubic equations and the Descartes-Euler solution of quartic equations in terms of their complex coefficients are also presented [5].},

author = {Marco Riccardi},

journal = {Formalized Mathematics},

language = {eng},

number = {2},

pages = {117-122},

title = {Solution of Cubic and Quartic Equations},

url = {http://eudml.org/doc/267002},

volume = {17},

year = {2009},

}

TY - JOUR

AU - Marco Riccardi

TI - Solution of Cubic and Quartic Equations

JO - Formalized Mathematics

PY - 2009

VL - 17

IS - 2

SP - 117

EP - 122

AB - In this article, the principal n-th root of a complex number is defined, the Vieta's formulas for polynomial equations of degree 2, 3 and 4 are formalized. The solution of quadratic equations, the Cardan's solution of cubic equations and the Descartes-Euler solution of quartic equations in terms of their complex coefficients are also presented [5].

LA - eng

UR - http://eudml.org/doc/267002

ER -

## References

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- [11] Zinaida Trybulec. Properties of subsets. Formalized Mathematics, 1(1):67-71, 1990.
- [12] Yuguang Yang and Yasunari Shidama. Trigonometric functions and existence of circle ratio. Formalized Mathematics, 7(2):255-263, 1998.

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