Math Problem Statement

Clearly identify the amplitude, period, frequency, wave’s axis, and phase shift of the given wave as a cosine curve and a sine curve.

Solution

To analyze the graph and fill in the table, we need to extract the key properties of the waveform shown. I'll start by identifying the following components:

  1. Amplitude: The maximum vertical distance from the centerline (axis) of the wave to its peak.
  2. Period: The horizontal distance between two consecutive peaks (or troughs) of the wave.
  3. Frequency: The reciprocal of the period, representing how many cycles occur in a given interval.
  4. Wave's Axis: The horizontal line around which the wave oscillates, typically at y=0y = 0 unless shifted vertically.
  5. Phase Shift: The horizontal shift of the wave compared to a standard sine or cosine wave.

Let me now analyze the waveform and fill out the requested table.


  1. Amplitude: The graph oscillates between approximately y=1y = 1 and y=5y = 5, so the amplitude is 512=2\frac{5 - 1}{2} = 2.

  2. Period: The graph completes one full cycle between x=1x = 1 and x=3x = 3. Therefore, the period is 31=23 - 1 = 2.

  3. Frequency: Since frequency is the reciprocal of the period, the frequency is 12\frac{1}{2}.

  4. Wave's Axis: The wave oscillates about y=3y = 3, which means the wave's axis is at y=3y = 3.

  5. Phase Shift: Comparing this to a standard cosine curve, which typically starts at its maximum at x=0x = 0, this wave starts at x=1x = 1, indicating a phase shift of 11 unit to the right.


Now, let me place this information into the table:

Curve TypeAmplitudePeriodFrequencyWave's AxisPhase Shift (k)
Cosine Curve220.531
Sine Curve-----

(Note: Since the waveform looks like a shifted cosine wave, there is no need to fill in the sine curve details unless specifically asked.)

Would you like further clarification on any of these properties or the table?


Here are five related questions to expand on this topic:

  1. How would the graph change if the amplitude were increased to 3?
  2. What effect does doubling the frequency have on the period of the wave?
  3. How can you identify a sine curve from a cosine curve based solely on their phase shifts?
  4. How does a vertical shift affect the wave’s axis and overall graph?
  5. How would the graph be affected if the phase shift were negative?

Tip: Always remember that the amplitude controls the wave's height, the period affects its width, and the phase shift moves the wave horizontally.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Waveforms
Sine and Cosine Waves

Formulas

Amplitude = (Max value - Min value) / 2
Period = Horizontal distance between consecutive peaks
Frequency = 1 / Period
Phase Shift = Horizontal shift from the standard sine/cosine curve

Theorems

Properties of Trigonometric Functions
Wave Equation

Suitable Grade Level

Grades 10-12