IDNLearn.com: Where your questions meet expert advice and community insights. Get timely and accurate answers to your questions from our dedicated community of experts who are here to help you.

Identify the category that describes the end behaviors of each of the polynomial functions.

[tex]\[
\begin{array}{l}
p(x) = 3x^2 - 7 \quad \text{[Select]} \\
p(x) = 2x^5 + 8 \quad \text{[Select]} \\
p(x) = -3x^3 + 2x^2 - x - 1 \quad \text{[Select]} \\
p(x) = -4x^4 + 4x^2 - 3 \quad \text{[Select]}
\end{array}
\][/tex]


Sagot :

Let's analyze the end behavior of each polynomial function given:

1. Polynomial: [tex]\( p(x) = 3x^2 - 7 \)[/tex]

- Degree of the polynomial: 2 (The highest power of [tex]\( x \)[/tex] is 2)
- Leading coefficient: 3 (The coefficient of the highest power of [tex]\( x \)[/tex])

For polynomials with an even degree:
- If the leading coefficient is positive, both ends of the polynomial will rise.
- If the leading coefficient is negative, both ends of the polynomial will fall.

Since the degree is 2 (even) and the leading coefficient is 3 (positive), the end behavior is:
- Rises right, rises left

2. Polynomial: [tex]\( p(x) = 2x^5 + 8 \)[/tex]

- Degree of the polynomial: 5 (The highest power of [tex]\( x \)[/tex] is 5)
- Leading coefficient: 2 (The coefficient of the highest power of [tex]\( x \)[/tex])

For polynomials with an odd degree:
- If the leading coefficient is positive, the polynomial will rise to the right and fall to the left.
- If the leading coefficient is negative, the polynomial will fall to the right and rise to the left.

Since the degree is 5 (odd) and the leading coefficient is 2 (positive), the end behavior is:
- Rises right, falls left

3. Polynomial: [tex]\( p(x) = -3x^3 + 2x^2 - x - 1 \)[/tex]

- Degree of the polynomial: 3 (The highest power of [tex]\( x \)[/tex] is 3)
- Leading coefficient: -3 (The coefficient of the highest power of [tex]\( x \)[/tex])

For polynomials with an odd degree:
- If the leading coefficient is positive, the polynomial will rise to the right and fall to the left.
- If the leading coefficient is negative, the polynomial will fall to the right and rise to the left.

Since the degree is 3 (odd) and the leading coefficient is -3 (negative), the end behavior is:
- Falls right, rises left

4. Polynomial: [tex]\( p(x) = -4x^4 + 4x^2 - 3 \)[/tex]

- Degree of the polynomial: 4 (The highest power of [tex]\( x \)[/tex] is 4)
- Leading coefficient: -4 (The coefficient of the highest power of [tex]\( x \)[/tex])

For polynomials with an even degree:
- If the leading coefficient is positive, both ends of the polynomial will rise.
- If the leading coefficient is negative, both ends of the polynomial will fall.

Since the degree is 4 (even) and the leading coefficient is -4 (negative), the end behavior is:
- Falls right, falls left

So, the end behaviors for each polynomial are:

1. [tex]\( p(x) = 3x^2 - 7 \)[/tex] ⟹ Rises right, rises left
2. [tex]\( p(x) = 2x^5 + 8 \)[/tex] ⟹ Rises right, falls left
3. [tex]\( p(x) = -3x^3 + 2x^2 - x - 1 \)[/tex] ⟹ Falls right, rises left
4. [tex]\( p(x) = -4x^4 + 4x^2 - 3 \)[/tex] ⟹ Falls right, falls left