Question

Let u = <-5, 1>, v = <7, -4>. Find 9u - 6v.

Answer 1

u = <-5, 1>

9u = <9× -5, 9× 1> = <-45, 9>

Answer 2

Same way by v, you will multiply each component of v times 6 to get 6v.

Answer 3

v = <7, -4>
6v = <6× 7, 6× -4> = < ? , ? >

Answer 4

then suppose you have:

\(v_1\)=<a,b>
\(v_2\)=<c,d>


then:

\(v_1\)-\(v_2\) = <a,b> - <c,d> = < a-c , b-d >

Answer 5

Thanks!

Answer 6

Yw