Question

Find if -3w - 6(u + 2v) if u = -3j, v = i + 2], and w =combination of unit vectors.-;. Express your answer as a linear

Answer 1

we have the expressiob

-3w - 6(u + 2v)

where

u=-3j

v=i+2j

w=-(1/3)i-(7/3)j

substitute the given values in the expression

so

-3(-(1/3)i-(7/3)j)-6(-3j+2(i+2j))

(i+7j)-6(-3j+2i+4j)

(i+7j)-6(2i+j)

(i+7j)-12i-6j

answer is

-11i+j