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kirza4 [7]
2 years ago
12

1. Match the polynomial with its end behavior.

Mathematics
1 answer:
zlopas [31]2 years ago
6 0

Using limit concepts, the matching pairs are:

A - 3

B - 1

C - 2

D - 4

The end behavior of a function f(x) is given by it's <u>limit as x goes to infinity.</u>

Function A:

f(x) = -2x + 3, then:

\lim_{x \rightarrow -\infty} f(x) = \lim_{x \rightarrow -\infty} -2x = -2(-\infty) = \infty

\lim_{x \rightarrow \infty} f(x) \lim_{x \rightarrow -\infty} -2x = -2(\infty) = -\infty

Thus, inverse directions, so matching pair with 3.

Function B:

f(x) = x^2 - 6x + 3, then:

\lim_{x \rightarrow -\infty} f(x) = \lim_{x \rightarrow -\infty} x^2 = (-\infty)^2 = \infty

\lim_{x \rightarrow \infty} f(x) \lim_{x \rightarrow -\infty} x^2 = (\infty)^2 = \infty

Always positive, so matching pair with 1.

Function C:

f(x) = 1 - x^2 + 2x^3, then:

\lim_{x \rightarrow -\infty} f(x) = \lim_{x \rightarrow -\infty} 2x^3 = 2(-\infty)^3 = -\infty

\lim_{x \rightarrow \infty} f(x) \lim_{x \rightarrow -\infty} 2x^3 = 2(\infty)^3 = \infty

Same directions, thus, matching pair with 2.

Function D:

f(x) = 7 - x^4, then:

\lim_{x \rightarrow -\infty} f(x) = \lim_{x \rightarrow -\infty} -x^4 = -(-\infty)^4 = -\infty

\lim_{x \rightarrow \infty} f(x) \lim_{x \rightarrow -\infty} -x^4 = -(\infty)^4 = -\infty

Always negative, so matching pair with 4.

A similar problem is given at brainly.com/question/9368215

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