Question

Let u = <5, 6>, v = <-2, -6>. Find -2u + 5v.

Answer 1

Answer on Question#53924 – Math – Vector Calculus

1. Let $\mathbf{u} = (5,6)$, $\mathbf{v} = (-2, -6)$. Find $-2\mathbf{u} + 5\mathbf{v}$.

Solution.

$$-2\mathbf{u} + 5\mathbf{v} = -2(5,6) + 5(-2, -6) = (-10, -12) + (-10, -30) = (-20, -42).$$

Answer:

hence, $-2\mathbf{u} + 5\mathbf{v} = (-20, -42)$.

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