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ERIC Number: EJ938182
Record Type: Journal
Publication Date: 2006-Nov
Pages: 11
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0746-8342
An Exceptional Exponential Function
Curgus, Branko
College Mathematics Journal, v37 n5 p344-354 Nov 2006
We show that there is a link between a standard calculus problem of finding the best view of a painting and special tangent lines to the graphs of exponential functions. Surprisingly, the exponential function with the "best view" is not the one with the base "e." A similar link is established for families of functions obtained by composing exponential functions with a fixed linear function. The key tool in the proof is the Lambert W function.
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:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A