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Homework Statement
Find the horizontal asymptote(if there is one) using the rule for determining the horizontal asymptote of a rational function for (x^2+x-12)/ (x^2 -4)
Homework Equations
The Attempt at a Solution
the degree of the numerator and denominator are both 2.
Y=(An)/(Bn)
Y=1/1
Y=1
When I do the math, the horizontal asymptote is the line y=1.
However when I graph this equation on a TI- 84 plus graphing calculator, if i use the trace, or table functions, the part of the graph that does not appear to cross the line y=1, does. Why is this?
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