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Definition: If lim x->a^(+/-) f(x) = +/- Infinity, then we say x=a is a vertical asymptote.

If lim x->+/- Infinity f(x) = a, then we say f(x) have a horizontal asymptote at a

If l(x) is a linear function such that lim x->+/- Infinity f(x)-l(x) = 0, then we say l(x) is a slanted asymptote.

As you might notice, there is no generic method of finding asymptotes. Rational functions are really nice, and the non-permissible values are likely vertical asymptotes.

Horizontal asymptotes should be easiest to approach, simply take limit at +/- Infinity

Vertical Asymptote just find non-permissible values, and take limits towards it to check

Slanted, most likely is educated guesses.

If you get f(x) = some infinite sum, there is no reason why we should be able to to find an asymptote of it with out simplify and comparison etc.

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Q: How do you find asymptotes of any function?
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