How do you find the vertical, horizontal or slant asymptotes for #y=(x^2)/(2x^2-8)#?

1 Answer
Feb 26, 2016

Answer:

vertical asymptotes at x = ± 2
horizontal asymptote at # y = 1/2 #

Explanation:

Vertical asymptotes occur as the denominator of a rational function tends to zero. To find the equation let denominator equal zero.

solve :# 2x^2 - 8 = 0 → 2(x^2 - 4) = 0 → 2(x-2)(x+2) = 0 #

equations of vertical asymptotes are x = ± 2

Horizontal asymptotes occur as #lim_(x→±∞) f(x) → 0#

If the degree of the numerator and denominator are equal then the equation can be found by taking the ratio of leading coefficients.
Here they are both of degree 2.

#rArr y = 1/2 #

Here is the graph of the function.
graph{x^2/(2x^2-8) [-10, 10, -5, 5]}