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Discrimination of the Roots of a Cubic Equation by Elementary Algebra

Published online by Cambridge University Press:  31 October 2008

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The following note shows how the conditions for the reality or equality of the roots of a cubic can be obtained from the similar conditions for a quadratic. The method does not involve the use of the calculus or the properties of turning points, nor of the imaginary cube roots of unity.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1915