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Parallelogram Identity
$$|\vec a+\vec b|^2+|\vec a-\vec b|^2=2|\vec a|^2+2|\vec b|^2$$
Usage
- Used in problems involving the magnitudes of vector sum and difference.
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Parallelogram Identity
$$|\vec a+\vec b|^2+|\vec a-\vec b|^2=2|\vec a|^2+2|\vec b|^2$$
Usage
- Used in problems involving the magnitudes of vector sum and difference.
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