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Which general pattern holds for various excited states in standing waves on a rope or string fixed at both ends?

1. More antinodes mean shorter wavelengths.

2. Standing waves involve the interference of waves traveling in the same direction.

3. Guitars and violins have antinodes only in even numbers: 0, 2, 4, and so on.

4. Where the nodes are, you also discover two antinodes.

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