u = 2i - 5j and v = -i + 3j, determine -6u - 3v.

Answer 1

Answer 2

Hello, Elizabeth,

I'll rephrase the question, slightly:

determine -6u - 3v

when

u = 2i - 5j, and

v = -i + 3j,

Put the expressions above into the original equation:

-6(2i-5j) -3(-i+3j)

-12i +30j +3i - 9j

Therefore, -6u - 3v = -9i + 21j

Bob