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Mathematics for IGCSE & O level - Vectors (Section 4 - No. 36)

If vector v = [x, y], which expression correctly describes the calculation of the magnitude of v?
x + y
x - y
√(x^2 + y^2)
√(x^2 - y^2)

Wyjaśnienie

The magnitude is √(x^2 + y^2).

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