What did they do at the part that I circled in red?????

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- Apr 27th 2013, 03:32 PMasilvester635Limits at infinity
What did they do at the part that I circled in red?????

- Apr 27th 2013, 03:45 PMdokrbbRe: Limits at infinity
they factorize x^2 under the radical, take it under the radical(having x^2 under the radical, or xx, you get only x out of the radical), and after that, divide the numerator and the denominator by the highest degree of x found in the denominator, which is x (that one one we got when taking it from under the radical)...

is it somewhat clear?

dokrbb - Apr 27th 2013, 05:26 PMasilvester635Re: Limits at infinity
I just plugged in infinity at step 4 and got the same answer....

- Apr 27th 2013, 05:42 PMdokrbbRe: Limits at infinity