Question

The choices are the same for both.

Answer 1

f(-∞) -∞

f(∞) = -∞

Explanation:

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

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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 *∞ = -∞