File:Brachistochrone.svg是本檔案的向量版本。 如果品質不低，就應該優先使用該檔案，而非PNG檔案。 File:Brachistochrone.png → File:Brachistochrone.svg 更多資訊請參閱Help:SVG/zh。 其他語言 Alemannisch ∙ Bahasa Indonesia ∙ Bahasa Melayu ∙ British English ∙ català ∙ čeština ∙ dansk ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ Esperanto ∙ euskara ∙ français ∙ Frysk ∙ galego ∙ hrvatski ∙ Ido ∙ italiano ∙ lietuvių ∙ magyar ∙ Nederlands ∙ norsk bokmål ∙ norsk nynorsk ∙ occitan ∙ Plattdüütsch ∙ polski ∙ português ∙ português do Brasil ∙ română ∙ Scots ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ suomi ∙ svenska ∙ Tiếng Việt ∙ Türkçe ∙ vèneto ∙ Ελληνικά ∙ беларуская (тарашкевіца) ∙ български ∙ македонски ∙ нохчийн ∙ русский ∙ српски / srpski ∙ татарча/tatarça ∙ українська ∙ ქართული ∙ հայերեն ∙ বাংলা ∙ தமிழ் ∙ മലയാളം ∙ ไทย ∙ 한국어 ∙ 日本語 ∙ 简体中文 ∙ 繁體中文 ∙ עברית ∙ العربية ∙ فارسی ∙ +/−

 

This image was copied from wikipedia:en. The original description was:

The cycloid as brachistochrone.

Cycloid created with gnuplot using the commands

 set terminal eps color
 set output "brachistochrone.eps"
 set nokey
 set noborder
 set noxtics
 set noytics
 set size ratio -1
 set parametric
 plot [t=0:5] t-sin(t), cos(t)-1 with lines lw 5

Then touched up with inkscape and exported as png. (Creating png output from gnuplot is bad since then the curve won't be properly anti-aliased.)

The image is in the public domain.

由於本圖像只屬於簡單的幾何圖形圖片，而其完全包含公眾財產資訊，且不存在原始創作人，因此著作權不適用於此並歸公有領域所有。