Study Sinusoidal Functions 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: Determine the amplitude of y=−4sin(x).
Answer:
- Amplitude is the absolute value: ∣−4∣=4.
Flashcard 2: Find the phase shift of y=2sin(x−4π).
Answer: 4π. Phase shift is the value subtracted inside the function.
Flashcard 3: What is the range of y=4sin(x)−2?
Answer: [-6, 2]. Range is [D−∣A∣,D+∣A∣]=[−2−4,−2+4].
Flashcard 4: Calculate the period for y=3sin(5x).
Answer: 52π. Period = 52π when B=5.
Flashcard 5: Find the amplitude of y=7cos(x)+3.
Answer:
- The coefficient 7 in front of cosine is the amplitude.
Flashcard 6: What is the range of y=4sin(x)−2?
Answer: [-6, 2]. Range is [D−∣A∣,D+∣A∣]=[−2−4,−2+4].
Flashcard 7: State the maximum value of y=8+5sin(x).
Answer:
- Maximum occurs when sin(x)=1: 8+5(1)=13.
Flashcard 8: Identify the phase shift for y=sin(x+π).
Answer: −π. Rewrite as sin(x−(−π)), so phase shift is −π.
Flashcard 9: What does the parameter B affect in the function y=Asin(B(x−C))+D?
Answer: Period. B determines horizontal compression/stretch, affecting how often the function repeats.
Flashcard 10: Find the minimum value of y=2sin(x)−3.
Answer: -5. Minimum occurs when sine equals -1: 2(−1)−3=−5.
Flashcard 11: Determine the sinusoidal axis for y=3sin(x)+4.
Answer: y=4. The sinusoidal axis is at the vertical shift y=4.
Flashcard 12: What is the range of y=2cos(x)−6?
Answer: [−8,−4]. Range is [−6−2,−6+2]=[−8,−4]
Flashcard 13: Calculate the period of y=sin(21x).
Answer: 4π. Period = 212π=4π.
Flashcard 14: Identify the sinusoidal axis for y=4sin(x)−1.
Answer: y=−1. The sinusoidal axis is at y=D=−1.
Flashcard 15: Determine the vertical shift for y=cos(x)−4.
Answer: -4. The constant term gives the vertical shift downward.
Flashcard 16: Calculate the period of y=2sin(3x−π).
Answer: 32π. Period = 32π when B=3.
Flashcard 17: Identify the sinusoidal axis for y=4sin(x)−1.
Answer: y=−1. The sinusoidal axis is at y=D=−1.
Flashcard 18: What does the parameter D represent in a sinusoidal function?
Answer: Vertical shift. D moves the entire graph up or down from the x-axis.
Flashcard 19: What is the general form of a sinusoidal function?
Answer: y=Asin(B(x−C))+D. Standard form with amplitude A, frequency B, phase shift C, and vertical shift D.
Flashcard 20: How is the period of a sinusoidal function calculated?
Answer: B2π. Period equals B2π where B is the frequency parameter.
Flashcard 21: Identify the phase shift for y=5sin(x−6π).
Answer: 6π. Phase shift is 6π units to the right.
Flashcard 22: Find the phase shift of y=cos(x−2π).
Answer: 2π. Phase shift is 2π units to the right.
Flashcard 23: Determine the amplitude of y=−2cos(x).
Answer:
- Amplitude is the absolute value of the coefficient: ∣−2∣=2.
Flashcard 24: What is the range of y=−3sin(x)+2?
Answer: [-1, 5]. Range is [2−3,2+3]=[−1,5] since amplitude is 3.
Flashcard 25: What does the parameter B affect in the function y=Asin(B(x−C))+D?
Answer: Period. B determines horizontal compression/stretch, affecting how often the function repeats.
Flashcard 26: What is the period of y=5cos(3x)?
Answer: 6π. Period = 312π=6π.
Flashcard 27: Calculate the period of y=2sin(3x−π).
Answer: 32π. Period = 32π when B=3.
Flashcard 28: What is the period of y=cos(4x)?
Answer: 8π. Period = 412π=8π.
Flashcard 29: State the maximum value of y=8+5sin(x).
Answer:
- Maximum occurs when sin(x)=1: 8+5(1)=13.
Flashcard 30: What is the period of y=cos(4x)?
Answer: 8π. Period = 412π=8π.
Flashcard 31: How is the period of a sinusoidal function calculated?
Answer: B2π. Period equals B2π where B is the frequency parameter.
Flashcard 32: What is the phase shift of the function y=Asin(B(x−C))+D?
Answer: C. The horizontal shift is C units to the right when positive.
Flashcard 33: Determine the period of y=sin(4x).
Answer: 2π. Period = 42π=2π.
Flashcard 34: Identify the amplitude of y=3cos(2x).
Answer:
- The coefficient of cosine gives the amplitude.
Flashcard 35: Identify the phase shift for y=sin(x+π).
Answer: −π. Rewrite as sin(x−(−π)), so phase shift is −π.
Flashcard 36: What does the parameter A represent in the sinusoidal function y=Asin(B(x−C))+D?
Answer: Amplitude. A controls the maximum distance from the sinusoidal axis.
Flashcard 37: Determine the vertical shift for y=cos(x)−4.
Answer: -4. The constant term gives the vertical shift downward.
Flashcard 38: Determine the amplitude of y=−4sin(x).
Answer:
- Amplitude is the absolute value: ∣−4∣=4.
Flashcard 39: Determine the sinusoidal axis for y=3sin(x)+4.
Answer: y=4. The sinusoidal axis is at the vertical shift y=4.
Flashcard 40: What does the sinusoidal axis represent?
Answer: Average value of max and min. The horizontal line around which the function oscillates.
Flashcard 41: State the vertical shift of y=cos(x)+5.
Answer:
- The constant term added to the function shifts it vertically.
Flashcard 42: Find the maximum value of y=3cos(x)+1.
Answer:
- Maximum occurs when cosine equals 1: 3(1)+1=4.
Flashcard 43: Identify the amplitude of y=3cos(2x).
Answer:
- The coefficient of cosine gives the amplitude.
Flashcard 44: Calculate the period of y=sin(21x).
Answer: 4π. Period = 212π=4π.
Flashcard 45: State the vertical shift of y=cos(x)+5.
Answer:
- The constant term added to the function shifts it vertically.
Flashcard 46: Find the minimum value of y=2sin(x)−3.
Answer: -5. Minimum occurs when sine equals -1: 2(−1)−3=−5.
Flashcard 47: What is the phase shift of the function y=Asin(B(x−C))+D?
Answer: C. The horizontal shift is C units to the right when positive.
Flashcard 48: What is the phase shift of y=4cos(x+3π)?
Answer: −3π. Rewrite as cos(x−(−3π)), so phase shift is −3π.
Flashcard 49: What is the general form of a sinusoidal function?
Answer: y=Asin(B(x−C))+D. Standard form with amplitude A, frequency B, phase shift C, and vertical shift D.
Flashcard 50: What is the frequency of y=cos(2x)?
Answer: 4π1. Frequency = 2πB=2π21=4π1.
Flashcard 51: What is the period of y=6sin(6x)?
Answer: 12π. Period = 612π=12π.
Flashcard 52: Find the maximum value of y=3cos(x)+1.
Answer:
- Maximum occurs when cosine equals 1: 3(1)+1=4.
Flashcard 53: What does the parameter A represent in the sinusoidal function y=Asin(B(x−C))+D?
Answer: Amplitude. A controls the maximum distance from the sinusoidal axis.
Flashcard 54: What is the period of y=5cos(3x)?
Answer: 6π. Period = 312π=6π.
Flashcard 55: What is the range of y=−3sin(x)+2?
Answer: [-1, 5]. Range is [2−3,2+3]=[−1,5] since amplitude is 3.
Flashcard 56: What does the parameter D represent in a sinusoidal function?
Answer: Vertical shift. D moves the entire graph up or down from the x-axis.
Flashcard 57: What is the period of y=6sin(6x)?
Answer: 12π. Period = 612π=12π.
Flashcard 58: What is the equation for a sinusoidal function with amplitude 5 and period π?
Answer: y=5sin(2x). Amplitude 5 and period π means B=π2π=2.
Flashcard 59: Calculate the period for y=3sin(5x).
Answer: 52π. Period = 52π when B=5.
Flashcard 60: Find the maximum value of y=3sin(x)−2.
Answer:
- Maximum occurs when sin(x)=1: 3(1)−2=1.
Flashcard 61: Determine the amplitude of y=−2cos(x).
Answer:
- Amplitude is the absolute value of the coefficient: ∣−2∣=2.
Flashcard 62: Find the phase shift of y=cos(x−2π).
Answer: 2π. Phase shift is 2π units to the right.
Flashcard 63: Identify the phase shift for y=5sin(x−6π).
Answer: 6π. Phase shift is 6π units to the right.
Flashcard 64: Find the maximum value of y=3sin(x)−2.
Answer:
- Maximum occurs when sin(x)=1: 3(1)−2=1.
Flashcard 65: Determine the period of y=sin(4x).
Answer: 2π. Period = 42π=2π.
Flashcard 66: What is the range of y=2cos(x)−6?
Answer: [-8, -4]. Range is [−6−2,−6+2]=[−8,−4].
Flashcard 67: What is the frequency of y=cos(2x)?
Answer: 4π1. Frequency = 2πB=2π21=4π1.
Flashcard 68: What is the equation for a sinusoidal function with amplitude 5 and period π?
Answer: y=5sin(2x). Amplitude 5 and period π means B=π2π=2.
Flashcard 69: Find the phase shift of y=2sin(x−4π).
Answer: 4π. Phase shift is the value subtracted inside the function.
Flashcard 70: What does the sinusoidal axis represent?
Answer: Average value of max and min. The horizontal line around which the function oscillates.
Flashcard 71: Find the amplitude of y=7cos(x)+3.
Answer:
- The coefficient 7 in front of cosine is the amplitude.
Flashcard 72: What is the phase shift of y=4cos(x+3π)?
Answer: −3π. Rewrite as cos(x−(−3π)), so phase shift is −3π.