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Math 211 Business Calculus Applications of Derivatives

Math 211 Business Calculus Applications of Derivatives

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– p. 5/34<br />

Vertical Asymptotes<br />

To find vertical asymptotes<br />

look for values <strong>of</strong>xwhich make the denominator zero<br />

Example: Consider the function<br />

f(x) = 5x3 +4x−8<br />

x 3 −2x 2 −3x<br />

Find the vertical asymptotes <strong>of</strong> f(x)<br />

Solution: Factor the denominator:<br />

x 3 −2x 2 −3x = x(x 2 −2x−3) = x(x−3)(x+1)<br />

So vertical asymptotes are:<br />

x = 0,x = 3, x = −1

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