Limits

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December 27th 2012, 05:35 AM
srirahulan

Limits

$\lim_ {x\rightarrow 0}\frac{\sqrt{x^4+1} - 2x^2-1}{x^2}$ How Can i Get the limit Value?
December 27th 2012, 05:51 AM
MarkFL

Re: Limits

$L=\lim_{x\to0}\frac{\sqrt{x^4+1}-2x^2-1}{x^2}$

Since we have the indeterminate form 0/0, we may apply L'Hôpital's rule to get:

$L=\lim_{x\to0}\frac{\frac{4x^3}{2\sqrt{x^4+1}}-4x}{2x}$

Can you proceed?

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