Question 155331
find the vertical asymtotes, f any, of the graph of the rational function. 
f(x)=x/x^2+4
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You have possible vertical asymptotes when the denominator is zero.
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So, solve x^2+4 = 0
x^2 = -4
x = +-2i and is not a Real Number.
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So f has no vertical asymptotes
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Cheers,
Stan H.