什麼叫 Variation

Variation 可以分為 4 種 :
Direct Variation, Inverse Variation, Joint Variation, Partial Variation

圖片參考：http://i178.photobucket.com/albums/w276/calligraphy-yahoo2006/directvariation.jpg



圖片參考：http://i178.photobucket.com/albums/w276/calligraphy-yahoo2006/inversevariation.jpg



圖片參考：http://i178.photobucket.com/albums/w276/calligraphy-yahoo2006/jointvariation.jpg



圖片參考：http://i178.photobucket.com/albums/w276/calligraphy-yahoo2006/partialvariation.jpg

All the pictures are from : http://certmaths.ilongman.com

Variation係變數
係科學來說,姐係可以改變的東西

變化
direct Variation - a= k b
and inverse variation a = k / b
k is a constant