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Horizontal Asymptotes of Rational Function | GeoGebra

How to Find Horizontal Asymptotes of a Rational Function?

The rational function is defined as:

f(x)=P(x)Q(x)

and the rational function under considerations is:

f(x)=(2x4−x3+7)(1+x2)

The derivative of the given rational function is:

ddxf(x)=(4x5−x4+8x3−3x2−14x))(1+x2)2

Horizontal asymptotes are available to the given function whenever the slope i.e. derivative is zero, so by putting

(4x5−x4+8x3−3x2−14x))(1+x2)2=0

We get, the roots of the polynomial available in the numerator. 3 roots are real in Nature while 2 are complex. The real roots are given as:

x=0,−0.946611…,1.18754…

Evaluating these roots in the given function f(x) and plot horizontal asymptotes of rational function in Geogebra

Complete Exercise in GeoGebra Worksheet

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