F.4 m2 about limit~1

👨🏻‍🏫 學術台數學

用戶36732

2010-04-10 2:49 am

Consider f(x) = [ | x-1 | / (x-1) ] (x+1).

(a) Determine whether f(x) is continuous at x = 1
(b) Find lim x→1 f(x).

仲有我想問....夾住x-1果兩豎係咩意思?

回答 (2)

用戶9112

2010-04-10 5:50 am

✔ 最佳答案

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圖片參考：http://img542.imageshack.us/img542/7096/59003831.png

2010-04-09 21:50:39 補充：
http://img542.imageshack.us/img542/7096/59003831.png

2010-04-09 21:51:42 補充：
Correction, a typo after f(1-) the limits should show x->0-

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知識就是力量

2010-04-10 2:54 am

absolute sign

2010-04-09 18:54:45 補充：
which means it always be positive

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