as x approaches positive infinity

the square root (in parenthesis) of (x ^2 + ax) minus x

Thanks in advance.

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- October 26th 2009, 05:29 PMroflcopturFind the limit
as x approaches positive infinity

the square root (in parenthesis) of (x ^2 + ax) minus x

Thanks in advance. - October 26th 2009, 07:14 PMmr fantastic
- October 26th 2009, 07:14 PMScott H
Have you learned L'Hospital's rule? We can occasionally rewrite a limit of the form as a limit of the form . In our case,

Edit: Or you can use Mr. Fantastic's method, which doesn't require the rule. - October 26th 2009, 09:58 PMroflcoptur(:
I have learned both methods. I understand both of them now. Thanks!