You want to animate a sine wave that moves horizontally over time. Which approach correctly updates the y-data in the update function?

hard📝 Application Q8 of 15

Matplotlib - Animations

Ay = [math.sin(x + frame/10) for x in x_data]

By = [math.sin(frame) for x in x_data]

Cy = [math.sin(x * frame) for x in x_data]

Dy = [math.sin(x) for x in x_data]

Step-by-Step Solution

Solution:

Step 1: Understand sine wave horizontal shift
Adding a small increment to x inside sine shifts the wave horizontally over frames.
Step 2: Analyze each option
y = [math.sin(x + frame/10) for x in x_data] adds frame/10 to x, creating smooth horizontal movement; others do not shift properly.
Final Answer:
y = [math.sin(x + frame/10) for x in x_data] -> Option A
Quick Check:
Shift x inside sin for horizontal wave movement [OK]

Quick Trick: Add frame offset inside sin argument for wave animation [OK]

Common Mistakes:

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