Sorry... But I am always struggling with limits...(adsbygoogle = window.adsbygoogle || []).push({});

This time, it's this

[tex]{\lim_{x \rightarrow 1} \frac{1}{(x-1)^2} - \frac{ax}{(x^2+1)^2}[/tex]

ais a parameter, so we have to discuss the limit when a equals different values. Am I right? if so, how can we do that?

This one is similar too, but I think if I know how to do the first one, I'll be able to do this one too:

[tex]\lim_{x \rightarrow -1} \frac{(x-a)(x-b)}{x^2+x}[/tex]

but do we have to discuss bothaandb??

Thank you a lot!

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# Homework Help: Troube with limits

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