Question

The choices are the same for both.

Answer 1

Answer:

f(-∞)  -∞

f(∞) = -∞

Step-by-step explanation:

f(x) = -8x^4 +3x^2 -7x

         -----------------------

           4x^2 -4

The -8x^4 / 4x^2  will dominate at infinity

f(x) can be approximated at ±∞ by -2 x^2

f(-∞) = -2(-∞)^2 = -2 *∞ = -∞

f(∞) = -2(∞)^2 = -2 *∞ = -∞

Answer 2

Answer:

-$\infty$

Step-by-step explanation:

f(x)=\frac{-8x^4+3x^2-7x}{4x^2-4}=\frac{-8x^2+3-7/x}{4-4/x^2}

As x approaches -\infty, f(x) will tend to -\infty