更新1:
i would like to ask why its answer is Delta greater than or equal to 0.
amaths --differentiation curve sketching
2008-03-26 11:14 pm
It is given that the curve C : y = (sqrt x) (3 - x). Find the range of values of x in which the curve is defined.
回答 (1)
2008-03-26 11:24 pm
✔ 最佳答案
With reference to the figure below :圖片參考：http://hk.geocities.com/stevieg_1023/YSQX.gif
From the grpah , we can see the range of values of x in which the curve is defined is x∈[0,+∞)
2008-03-27 19:28:13 補充：
From the graph , you can see the x-intercepts are 0 and 3 and therefore delta >0
收錄日期: 2021-04-25 17:19:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080326000051KK01935