NotesFAQContact Us
Collection
Advanced
Search Tips
Back to results
Peer reviewed Peer reviewed
Direct linkDirect link
ERIC Number: EJ960988
Record Type: Journal
Publication Date: 2011-Sep
Pages: 8
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0746-8342
EISSN: N/A
Generalized Parabolas
Joseph, Dan; Hartman, Gregory; Gibson, Caleb
College Mathematics Journal, v42 n4 p275-282 Sep 2011
In this article we explore the consequences of modifying the common definition of a parabola by considering the locus of all points equidistant from a focus and (not necessarily linear) directrix. The resulting derived curves, which we call "generalized parabolas," are often quite beautiful and possess many interesting properties. We show that the conic sections are generalized parabolas whose directrix is a circle or a line, and their well known reflective properties are actually specific instances of a reflective property held by all generalized parabolas. Finally, we offer the reader suggestions for further investigation.
Mathematical Association of America. 1529 Eighteenth Street NW, Washington, DC 20036. Tel: 800-741-9415; Tel: 202-387-5200; Fax: 202-387-1208; e-mail: maahq@maa.org; Web site: http://www.maa.org/pubs/cmj.html
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A