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Grade 11 Math Lab: Transcendence & Limits FREE

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Periodic Functions & Transformations

60 min Grade 11 Math Lab: Transcendence & Limits

Learning Objectives

  • Identify period and amplitude
  • Transform trig functions
  • Model real-world cycles

Key Concepts

Period

Smallest interval for one complete cycle

Frequency

Number of cycles per unit: f = 1/period

Theory

**y = A·sin(B(x - C)) + D or y = A·cos(B(x - C)) + D** - |A| = Amplitude - Period = 2π/|B| - C = Phase shift (horizontal) - D = Vertical shift (midline) **Modeling:** Daylight hours, tides, temperature cycles, sound waves. **Frequency:** f = |B|/(2π) cycles per unit

Examples

y = 3sin(πx/2). Find amplitude and period.

Solution: Amplitude = 3, Period = 2π/(π/2) = 4