｜x｜^2 < 1
..............-
question:absolute ｜x｜^2 less and equal to 1
我唔知點做,有冇人可以教下我?
how to solve it?
2007-10-16 8:05 am
回答 (2)
2007-10-16 8:25 am
✔ 最佳答案
| x | ^2 <= 1square root of ( | x | ^2) <= square root of 1
| x | <= 1
x <= 1 and x >= -1
-1 <= x <= 1
2007-10-21 8:06 am
Solve ｜x｜² ≦ 1.
｜x｜² ≦ 1
x² ≦ 1
-1 ≦ x ≦ 1
｜x｜² ≦ 1
x² ≦ 1
-1 ≦ x ≦ 1
收錄日期: 2021-04-13 18:57:16
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https://hk.answers.yahoo.com/question/index?qid=20071016000051KK00023