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11-30.

Given vectors u = , v = , and w = 2u − v, find . Homework Help ✎

$\bold\text{w} = 2\left\langle -3,2 \right\rangle -\left\langle 4,1 \right\rangle$

Once you find vector w, sketch it and use the Pythagorean theorem to find its length, or ||w||.