How do you graph #f(x)=(x^2-2x)/(x^2-4)# using holes, vertical and horizontal asymptotes, x and y intercepts?

Answer 1
We can factor #f(x)#.
#f(x) = (x(x - 2))/((x + 2)(x - 2))#
#f(x) = x/(x+ 2)#
This means that there will be a hole at #x = 2#. There will be a vertical asymptote at #x = -2#.

The horizontal asymptote will occur at the ratio between the highest power in the numerator and in the denominator (only if the powers are equal).

Hence, there will be a horizontal asymptote at #y = 1/1 = 1#.

As for intercepts, the graph will pass through the origin, and the origin will serve as the x and y intercept.

Here is the graph:

graph{(x^2 - 2x)/(x^2 - 4) [-10, 10, -5, 5]}

Hopefully this helps!

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Answer 2

To graph the function f(x) = (x^2 - 2x)/(x^2 - 4), we can analyze its holes, vertical and horizontal asymptotes, as well as the x and y intercepts.

  1. Holes: To find the holes, we need to determine the values of x that make the denominator (x^2 - 4) equal to zero. Solving x^2 - 4 = 0, we get x = ±2. Therefore, there are holes at x = 2 and x = -2.

  2. Vertical asymptotes: Vertical asymptotes occur when the denominator of a rational function equals zero, but the numerator does not. In this case, the denominator (x^2 - 4) equals zero at x = ±2. Thus, there are vertical asymptotes at x = 2 and x = -2.

  3. Horizontal asymptote: To find the horizontal asymptote, we compare the degrees of the numerator and denominator. Both have a degree of 2, so we divide the leading coefficients. In this case, the leading coefficients are both 1. Therefore, the horizontal asymptote is y = 1.

  4. x-intercepts: To find the x-intercepts, we set the numerator (x^2 - 2x) equal to zero and solve for x. Factoring x(x - 2) = 0, we find x = 0 and x = 2. Thus, the x-intercepts are at x = 0 and x = 2.

  5. y-intercept: To find the y-intercept, we substitute x = 0 into the function. f(0) = (0^2 - 2(0))/(0^2 - 4) = 0/(-4) = 0. Therefore, the y-intercept is at y = 0.

By considering these aspects, we can graph the function f(x) = (x^2 - 2x)/(x^2 - 4) accordingly.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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