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bothering problems


kavlas

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Hi everyone

 

There two problems that bother me for quite some time.

 

1)If [math]\lim_{x\to\infty}\frac{f(x+1)}{f(x)}=2[/math] then find [math]\lim_{x\to\infty}\frac{f(x+2)}{f(x-2)}[/math].

 

2) I do not know if this the right place to ask for this problem but here it goes.

 

Can we prove the De Morgan law?

 

Thank you

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