Subject: Mathematics
Book: Maths Mastery
Rational functions may exhibit asymptotes where they approach but never touch certain lines. Horizontal asymptotes occur if the degrees of numerator and denominator favor a constant limit as x→∞. Vertical asymptotes often appear at values that make the denominator zero (like x=2 if (x–2) is in the denominator). Oblique (slant) asymptotes arise if the polynomial long division yields a linear term with a remainder. Knowing asymptotes helps graph rational functions, interpret large x behavior, and highlight possible domain restrictions. This concept is vital in calculus, ensuring a deeper view of function growth or singularities.
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