find the intervals of increasing and decreasing?
回答 (1)
2015-12-09 7:08 am
✔ 最佳答案
When k(x) is increasing, k'(x) > 0
When k(x) is decreasing, k'(x) < 0
Consider the denominator,
x² - 9 = 0
x² = 9
x = ±3
Please Read：
http://s8.postimg.org/av51sdbib/image.png
收錄日期: 2021-04-18 14:10:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151208225253AA3uQPQ