二次函數圖像

移動a,b,c，觀察
1)a為正數時，圖像開口之方向
2)a為負數時，圖像開口之方向
3)b為正數時，圖像移動方向
4)b為負數時，圖像移動方向
5)c為正數時，圖像移動方向
6)c為負數時，圖像移動方向

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

Law Chi Wai, Created with GeoGebra