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  1. AP Pre Calculus
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How does the graph of an even-degree polynomial with a positive leading coefficient look as xxx approaches ±∞\pm \infty±∞?

The graph rises on both the left and right sides.

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How does the graph of an even-degree polynomial with a positive leading coefficient look as xxx approaches ±∞\pm \infty±∞?

The graph rises on both the left and right sides.

How does the graph of an odd-degree polynomial with a positive leading coefficient look as xxx approaches ±∞\pm \infty±∞?

The graph rises to the right and falls to the left.

How does the graph of an even-degree polynomial with a negative leading coefficient look as xxx approaches ±∞\pm \infty±∞?

The graph falls on both the left and right sides.

How does the graph of an odd-degree polynomial with a negative leading coefficient look as xxx approaches ±∞\pm \infty±∞?

The graph falls to the right and rises to the left.

What does a graph with both ends approaching infinity indicate about the polynomial's degree and leading coefficient?

It suggests an even degree and a positive leading coefficient.

What does a graph with both ends approaching negative infinity indicate about the polynomial's degree and leading coefficient?

It suggests an even degree and a negative leading coefficient.

What does a graph rising to the right and falling to the left indicate about the polynomial's degree and leading coefficient?

It suggests an odd degree and a positive leading coefficient.

What does a graph falling to the right and rising to the left indicate about the polynomial's degree and leading coefficient?

It suggests an odd degree and a negative leading coefficient.

How can you identify the leading term from a graph's end behavior?

By observing the direction of the graph as x approaches positive and negative infinity.

What does the end behavior of a polynomial graph tell you about possible horizontal asymptotes?

Polynomials do not have horizontal asymptotes; they either increase or decrease without bound.

Define 'end behavior' of a function.

Describes the function's output values as input values approach positive or negative infinity.

What is a 'leading term'?

The term with the highest degree in a polynomial function.

Define 'leading coefficient'.

The coefficient of the term with the highest degree.

What does limx→∞f(x)=∞lim_{x \to \infty} f(x) = \inftylimx→∞​f(x)=∞ mean?

As x approaches infinity, the function f(x) also approaches infinity.

What does limx→−∞f(x)=−∞lim_{x \to -\infty} f(x) = -\inftylimx→−∞​f(x)=−∞ mean?

As x approaches negative infinity, the function f(x) also approaches negative infinity.

What is the significance of the degree of a polynomial?

The highest power of the variable in the polynomial; influences the shape and end behavior.

What is the significance of the sign of the leading coefficient?

Determines whether the function increases or decreases without bound as x approaches infinity or negative infinity.

What is meant by 'increases without bound'?

The function's values become infinitely large (positive infinity).

What is meant by 'decreases without bound'?

The function's values become infinitely small (negative infinity).

Define polynomial function.

A function that can be expressed in the form f(x)=anxn+an−1xn−1+...+a1x+a0f(x) = a_n x^n + a_{n-1} x^{n-1} + ... + a_1 x + a_0f(x)=an​xn+an−1​xn−1+...+a1​x+a0​, where n is a non-negative integer.

How to determine the end behavior of f(x)=5x3−2x+1f(x) = 5x^3 - 2x + 1f(x)=5x3−2x+1?

Identify the leading term: 5x35x^35x3. Since the coefficient is positive and the degree is odd, as x→∞x \to \inftyx→∞, f(x)→∞f(x) \to \inftyf(x)→∞ and as x→−∞x \to -\inftyx→−∞, f(x)→−∞f(x) \to -\inftyf(x)→−∞.

How to determine the end behavior of g(x)=−3x4+x2−5g(x) = -3x^4 + x^2 - 5g(x)=−3x4+x2−5?

Identify the leading term: −3x4-3x^4−3x4. Since the coefficient is negative and the degree is even, as x→±∞x \to \pm \inftyx→±∞, g(x)→−∞g(x) \to -\inftyg(x)→−∞.

Describe the steps to find the end behavior of a polynomial.

  1. Identify the leading term. 2. Note the sign of the leading coefficient. 3. Note the degree of the leading term. 4. Apply the rules for even/odd degree and positive/negative coefficient.

How do you determine the end behavior of f(x)=(2x−1)(x+3)(x−2)f(x) = (2x - 1)(x + 3)(x - 2)f(x)=(2x−1)(x+3)(x−2)?

Expand to find the leading term: 2x32x^32x3. Positive coefficient, odd degree. As x→∞x \to \inftyx→∞, f(x)→∞f(x) \to \inftyf(x)→∞; as x→−∞x \to -\inftyx→−∞, f(x)→−∞f(x) \to -\inftyf(x)→−∞.

How do you determine the end behavior of f(x)=−(x2+1)(x4+2)f(x) = -(x^2 + 1)(x^4 + 2)f(x)=−(x2+1)(x4+2)?

Expand to find the leading term: −x6-x^6−x6. Negative coefficient, even degree. As x→±∞x \to \pm \inftyx→±∞, f(x)→−∞f(x) \to -\inftyf(x)→−∞.

What is the end behavior of f(x)=7x5−3x2+1f(x) = 7x^5 - 3x^2 + 1f(x)=7x5−3x2+1?

Leading term is 7x57x^57x5. Positive coefficient, odd degree. As x→∞x \to \inftyx→∞, f(x)→∞f(x) \to \inftyf(x)→∞; as x→−∞x \to -\inftyx→−∞, f(x)→−∞f(x) \to -\inftyf(x)→−∞.

What is the end behavior of f(x)=−x6+4x3−9f(x) = -x^6 + 4x^3 - 9f(x)=−x6+4x3−9?

Leading term is −x6-x^6−x6. Negative coefficient, even degree. As x→±∞x \to \pm \inftyx→±∞, f(x)→−∞f(x) \to -\inftyf(x)→−∞.

What is the end behavior of f(x)=−2x3+5x−1f(x) = -2x^3 + 5x - 1f(x)=−2x3+5x−1?

Leading term is −2x3-2x^3−2x3. Negative coefficient, odd degree. As x→∞x \to \inftyx→∞, f(x)→−∞f(x) \to -\inftyf(x)→−∞; as x→−∞x \to -\inftyx→−∞, f(x)→∞f(x) \to \inftyf(x)→∞.

What is the end behavior of f(x)=4x4−x2+6f(x) = 4x^4 - x^2 + 6f(x)=4x4−x2+6?

Leading term is 4x44x^44x4. Positive coefficient, even degree. As x→±∞x \to \pm \inftyx→±∞, f(x)→∞f(x) \to \inftyf(x)→∞.

How to find the end behavior of f(x)=(x−1)2(x+2)f(x) = (x-1)^2(x+2)f(x)=(x−1)2(x+2)?

Expand to find the leading term: x3x^3x3. Positive coefficient, odd degree. As x→∞x \to \inftyx→∞, f(x)→∞f(x) \to \inftyf(x)→∞; as x→−∞x \to -\inftyx→−∞, f(x)→−∞f(x) \to -\inftyf(x)→−∞.