[Kanobei]

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Basically All a Vertical Asymptote is where it's all the answers x cannot be... aka where it becomes irrational...
http://www.purplemath.com/modules/asymtote.htm
A little diagram will help you understand what is happening when x makes 0 in the denominator on a graph... :)

It's a pretty fun way of doing solutions though really. Actually they are really useful in alot of calculus

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