Find the limit as x tends to negative infinity
(Square root of (4x^(2) + 1) ) / (4x+1)
I get 1/2, but my textbook ans is -1/2
Thank you
Easy Limit
2013-11-30 11:11 pm
回答 (1)
2013-12-01 1:31 am
✔ 最佳答案
Find the limit as x tends to negativeinfinity(Square root of (4x^(2) + 1) ) / (4x+1)
I get 1/2, but my textbook ans is -1/2
Thank you
Sol
lim(x->－∞)_√(4x^2+1)/(4x+1)
=lim(y->∞)_√(4y^2+1)/(－4y+1)
=lim(y->∞)_√(4+1/y^2)/(－4+1/y)
=√4/(─4)
=－1/2
收錄日期: 2021-04-30 18:16:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20131130000051KK00089