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Use the dot product to find lv| when v=(-2,-1)
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Use the dot product to find lv| when v=(-2,-1)

User James Yang
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V = (-2, -1)

By using dot products
v • v = (-2, -1) • (-2, -1)

v^2 = {(-2) • (-2)} + {(-1) • (-1)}

V^2 = 4 + 1

v^2 = 5

:. v = sq root of (5)
User UnholySheep
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