The equation of a stationary wave is `y=20cos0.5pixsin100pit`. Find the equations of its parent progressive waves.

Explanation

To find the equations of the parent progressive waves from the given stationary wave equation \( y = 20 \cos(0.5 \pi x) \sin(100 \pi t) \), we can follow these steps:

### Step 1: Understand the Form of the Stationary Wave
The stationary wave can be expressed in the form:
\[ y = A \cos(kx) \sin(\omega t) \]
where \( A \) is the amplitude, \( k \) is the wave number, and \( \omega \) is the angular frequency.

### Step 2: Identify Parameters
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