Study Polynomial Functions And Rates Of Change in AP Precalculus with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.
All flashcards
Flashcard 1: State the derivative of 5x3−2x2+x−8.
Answer: 15x2−4x+1. Apply power rule to each term separately.
Flashcard 2: Find the roots of x2−4x+4=0.
Answer: x=2 (multiplicity 2). Perfect square: (x−2)2=0 gives repeated root.
Flashcard 3: What is the end behavior of f(x)=−3x2+5x?
Answer: As x→±∞, f(x)→−∞. Even degree with negative leading coefficient.
Flashcard 4: Determine the polynomial degree of 7x5−4x3+x−9.
Answer:
- The highest power of x is 5.
Flashcard 5: What is the sum of the roots of x2−5x+6=0?
Answer:
- For ax2+bx+c=0, sum of roots is −ab.
Flashcard 6: What is the leading coefficient of x4−3x3+5x−2?
Answer:
- Coefficient of highest degree term when no coefficient shown is 1.
Flashcard 7: What is the end behavior of f(x)=−3x2+5x?
Answer: As x→±∞, f(x)→−∞. Even degree with negative leading coefficient.
Flashcard 8: What is the degree of the polynomial 3x4+5x2−7?
Answer:
- The highest power of x determines the degree.
Flashcard 9: Determine the y-intercept of f(x)=x3−4x+7.
Answer:
- Evaluate f(0)=03−4(0)+7=7.
Flashcard 10: State the formula for the derivative of axn.
Answer: naxn−1. Power rule: bring down exponent, reduce power by 1.
Flashcard 11: Which term is the cubic term in 7x3+2x2−x+5?
Answer: 7x3. The term containing x to the third power.
Flashcard 12: Identify the leading coefficient of 6x3−4x+2.
Answer:
- The coefficient of the highest degree term.
Flashcard 13: Find the derivative of f(x)=x3+2x2−x+1.
Answer: 3x2+4x−1. Apply power rule to each term.
Flashcard 14: What is the root multiplicity of f(x)=(x−2)3 at x=2?
Answer:
- The exponent indicates how many times the root repeats.
Flashcard 15: Find the product of the roots of x2−5x+6=0.
Answer:
- For ax2+bx+c=0, product of roots is ac.
Flashcard 16: What is the rate of change of f(x)=x2+3 at x=2?
Answer:
- Evaluate f′(2)=2(2)=4 where f′(x)=2x.
Flashcard 17: Identify the quadratic term in x2−4x+4.
Answer: x2. The term containing x to the second power.
Flashcard 18: Which polynomial has a degree of 0?
Answer: Constant polynomials. Non-zero constants have degree 0.
Flashcard 19: What does it mean for a polynomial to be monic?
Answer: Leading coefficient is 1. A monic polynomial has leading coefficient equal to 1.
Flashcard 20: Find the sum of coefficients in f(x)=2x3−4x+6.
Answer:
- Evaluate f(1)=2(1)3−4(1)+6=4.
Flashcard 21: What is the derivative of f(x)=7x4−2?
Answer: 28x3. Apply power rule: 4⋅7x3=28x3.
Flashcard 22: What is the sum of the roots of x2−5x+6=0?
Answer:
- For ax2+bx+c=0, sum of roots is −ab.
Flashcard 23: Find the derivative of f(x)=3x2−4x+6 at x=1.
Answer:
- Evaluate f′(1)=6(1)−4=2 where f′(x)=6x−4.
Flashcard 24: Identify the quadratic term in x2−4x+4.
Answer: x2. The term containing x to the second power.
Flashcard 25: Identify the polynomial with zero leading coefficient.
Answer: Not possible; an=0 for leading term. A polynomial must have a non-zero leading coefficient.
Flashcard 26: Which term in 5x3+2x2−x+7 is the constant term?
Answer:
- The term with no variable (degree 0).
Flashcard 27: What is the standard form of a polynomial?
Answer: anxn+an−1xn−1+⋯+a1x+a0. Terms arranged by decreasing powers of x.
Flashcard 28: What is the degree of the polynomial 3x4+5x2−7?
Answer:
- The highest power of x determines the degree.
Flashcard 29: What is the leading term of −5x4+3x2−x+8?
Answer: −5x4. The term with highest power and its coefficient.
Flashcard 30: What is the root multiplicity of f(x)=(x−2)3 at x=2?
Answer:
- The exponent indicates how many times the root repeats.
Flashcard 31: What is the standard form of a polynomial?
Answer: anxn+an−1xn−1+⋯+a1x+a0. Terms arranged by decreasing powers of x.
Flashcard 32: What is the constant term of 4x3+9x−7?
Answer: -7. The term with no variable attached.
Flashcard 33: What is the vertex form of the quadratic x2+6x+9?
Answer: (x+3)2. Complete the square or recognize perfect square trinomial.
Flashcard 34: Determine the degree of f(x)=(x+1)(x−1)(x+3).
Answer:
- Product of three linear factors gives degree 3.
Flashcard 35: What is the coefficient of x2 in 3x2+4x+5?
Answer:
- The numerical factor multiplying x2.
Flashcard 36: What is the vertex form of the quadratic x2+6x+9?
Answer: (x+3)2. Complete the square or recognize perfect square trinomial.
Flashcard 37: Find the derivative of f(x)=3x2−4x+6 at x=1.
Answer:
- Evaluate f′(1)=6(1)−4=2 where f′(x)=6x−4.
Flashcard 38: Convert f(x)=(x−1)(x+2) to standard form.
Answer: x2+x−2. Use FOIL to expand the product.
Flashcard 39: What is the end behavior of f(x)=2x3−5x+1?
Answer: As x→∞, f(x)→∞; as x→−∞, f(x)→−∞. Odd degree with positive leading coefficient.
Flashcard 40: Find the sum of coefficients in f(x)=2x3−4x+6.
Answer:
- Evaluate f(1)=2(1)3−4(1)+6=4.
Flashcard 41: Determine the y-intercept of f(x)=x3−4x+7.
Answer:
- Evaluate f(0)=03−4(0)+7=7.
Flashcard 42: Find the x-intercepts of f(x)=x2−4.
Answer: x=2,x=−2. Set f(x)=0 and solve for x.
Flashcard 43: State the formula for the derivative of axn.
Answer: naxn−1. Power rule: bring down exponent, reduce power by 1.
Flashcard 44: What is the derivative of f(x)=7x4−2?
Answer: 28x3. Apply power rule: 4⋅7x3=28x3.
Flashcard 45: What is the end behavior of f(x)=2x3−5x+1?
Answer: As x→∞, f(x)→∞; as x→−∞, f(x)→−∞. Odd degree with positive leading coefficient.
Flashcard 46: Find the x-intercepts of f(x)=x2−4.
Answer: x=2,x=−2. Set f(x)=0 and solve for x.
Flashcard 47: Find the product of the roots of x2−5x+6=0.
Answer:
- For ax2+bx+c=0, product of roots is ac.
Flashcard 48: Convert f(x)=(x−1)(x+2) to standard form.
Answer: x2+x−2. Use FOIL to expand the product.
Flashcard 49: Determine the polynomial degree of 7x5−4x3+x−9.
Answer:
- The highest power of x is 5.
Flashcard 50: What is the constant term of (x+2)(x−3)?
Answer: -6. Expand and identify the constant term.
Flashcard 51: What is the constant term of (x+2)(x−3)?
Answer: -6. Expand and identify the constant term.
Flashcard 52: Determine the leading term of 2x4+3x3−x+5.
Answer: 2x4. The term with the highest power of x.
Flashcard 53: What is the leading coefficient of x4−3x3+5x−2?
Answer:
- Coefficient of highest degree term when no coefficient shown is 1.
Flashcard 54: Determine the y-intercept of f(x)=7x2−3x+5.
Answer:
- Set x=0 and evaluate the function.
Flashcard 55: Which polynomial has a degree of 0?
Answer: Constant polynomials. Non-zero constants have degree 0.
Flashcard 56: Determine the leading term of 2x4+3x3−x+5.
Answer: 2x4. The term with the highest power of x.
Flashcard 57: Identify the polynomial with zero leading coefficient.
Answer: Not possible; an=0 for leading term. A polynomial must have a non-zero leading coefficient.
Flashcard 58: Determine the y-intercept of f(x)=7x2−3x+5.
Answer:
- Set x=0 and evaluate the function.
Flashcard 59: Find the derivative of f(x)=x3+2x2−x+1.
Answer: 3x2+4x−1. Apply power rule to each term.