Help evaluate this limit
Favorites|Homepage
Subscriptions | sitemap
HOME > > Help evaluate this limit

Help evaluate this limit

[From: ] [author: ] [Date: 12-10-02] [Hit: ]
......
limx--> -∞ sq(x²-2x+3)/x+5
I got 1 as an answer but the answer is -1, can you explain why?

-
factor out an x^2

lim x--> -∞ sqrt( x^2 ( 1 / x^4 - 2 / x^3 + 3 / x^2)

lim x--> -∞ x * sqrt(1 / x^4 - 2 / x^3 + 3 / x^2 ) / x + 5

lim x--> -∞ x * sqrt(1 / x^4 - 2 / x^3 + 3 / x^2) / x + 5

x / -x = - 1

It's x^2 in the radical, so it would be a postive x ontop
1
keywords: evaluate,Help,this,limit,Help evaluate this limit
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .