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Math Help - finding the x-intercept when the function has an asymptote on a TI-84?

  1. #1
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    finding the x-intercept when the function has an asymptote on a TI-84?

    Hey all,

    So, I have come across a problem that requires me to input a function into my TI-84 and provide the x-intercept.

    The function has an asymptote at X=0, but only the segment from (-infinity, 0) has an x-intercept. I have been trying to figure out the x-intercept value by doing the traditional method of trace-->intercept, but this doesn't seem to work. I first select the part of the curve underneath the x-axis as my "first curve", but then when I try and select the part above the x-axis, the calculator doesn't seem to process that as my "second curve". As a result, I can't find out the x-intercept!

    Can anybody help me out with this?
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  2. #2
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    Re: finding the x-intercept when the function has an asymptote on a TI-84?

    How can we help you if you do not provide us the formula of the function?
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  3. #3
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    Re: finding the x-intercept when the function has an asymptote on a TI-84?

    it is pi(r2)+(100/r)
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