Google Chrome

下載
GoogleChromePortable_21.0.1180.83_azo.exe
https://www.dropbox.com/s/svxf2o83a7lerab/GoogleChromePortable_21.0.1180.83_azo.exe

Google Chrome app 商店
https://chrome.google.com/webstore/category/home
grapg.tk
https://chrome.google.com/webstore/detail/graphtk/nkhkaamdeplibnmodcgodlkghphdbahk

教學
graph F(x)
http://www.techbang.com/posts/7792-google-search-for-drawing-functions-help-you-write-your-math-homework-you-can-draw-love-confession

補充
Desmos Graphing Calculator (線上函數繪圖)
https://www.desmos.com/calculator
教學
http://blog.soft.idv.tw/?p=1196