係關於a.maths d inequalities
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a.maths問題
回答 (1)
2008-08-04 4:46 pm
✔ 最佳答案
Linear, Absolute Value:http://www.scribd.com/doc/3215466/Algebra-Solving-and-Graphing-Inequalities
Quadratic:
http://www.purplemath.com/modules/ineqquad.htm
2008-08-04 08:48:23 補充：
e.g.
(x > 4) and (x < 4) => No solution
(x > 4) or (x < 4) => x != 4
(x > 4) or (x > 3) => x > 3
(x > 4) and (x > 3) => x > 4
收錄日期: 2021-04-23 19:56:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080725000051KK00958