Investigating zeros of cubics with geogebra

• Autores: David A. Miller, Larry Ottman (ed. lit.), Russell Gordon (ed. lit.)
• Localización: Mathematics teacher, ISSN-e 2330-0582, ISSN 0025-5769, Vol. 105, Nº 2, 2011, págs. 146-149
• Idioma: inglés
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• Resumen

  • Author uses GeoGebra to show that tangent lines at the mean of two x-intercepts of a cubic with three real roots will pass through the third x-intercept