. this is how i solve this, but i know it's not true.. why?

so,

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- April 25th 2013, 11:15 PMorirwhy didn't i solve the lim well?
. this is how i solve this, but i know it's not true.. why?

so, - April 25th 2013, 11:25 PMibduttRe: why didn't i solve the lim well?
I find the approach absolutely correct.

- April 25th 2013, 11:29 PMMarkFLRe: why didn't i solve the lim well?
I don't see where you went wrong myself, and your result agrees with mine.

- April 26th 2013, 12:10 AMorirRe: why didn't i solve the lim well?
but look here:

lim sqrt(x^2+x)-x - Wolfram|Alpha - April 26th 2013, 12:27 AMMarkFLRe: why didn't i solve the lim well?
Yes, and as the limit is 1/2.

- April 26th 2013, 01:02 AMorirRe: why didn't i solve the lim well?
- April 26th 2013, 01:12 AMMarkFLRe: why didn't i solve the lim well?
I missed the negative sign...in that case I would rewrite the limit as:

- April 26th 2013, 02:11 AMorirRe: why didn't i solve the lim well?
didn't understand you.. what in this case?

- April 26th 2013, 02:29 AMMarkFLRe: why didn't i solve the lim well?
In the case of I substituted x with -x...

- April 26th 2013, 03:52 AMzzephodRe: why didn't i solve the lim well?
- April 26th 2013, 04:17 AMorirRe: why didn't i solve the lim well?
ok.. so i still don't get how it should be solved

- April 26th 2013, 05:23 AMPlatoRe: why didn't i solve the lim well?