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Math Help - Ti 89 Titanium: Finding An Equation Of An Asymptote

  1. #1
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    Wink Ti 89 Titanium: Finding An Equation Of An Asymptote

    What do you need to press to find the equation of the asymptote?
    This is the eqation y=4x/(x^2+15)^(1/2)
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  2. #2
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    I do not believe it will give you the equation of any asymptotes. You have to figure them yourself. You can look at the graph and tell where they are, but it will not give you the equation. If I am wrong, I hope someone would point out that feature to me as well. But, your horizontal asymptotes are at x=4 and x=-4.

    \lim_{x\to {\infty}}\frac{4x}{\sqrt{x^{2}+15}}=4

    \lim_{x\to {-\infty}}\frac{4x}{\sqrt{x^{2}+15}}=-4

    No vertical or oblique.

    You know, that is a good recommendation to send to TI's R&D dept.

    That would be a nice feature to add.
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