Question

If u= <4,5> and v= <0,-1>, find 2v+5u

Answer 1

<20,23>

Explanation:

2v = 2<0,-1> = <0,-2>

5u = 5<4,5> = <20,25>

2v + 5u = <0,-2> + <20,25>

= <20,23>

Answer 2

<20,23>

Explanation:

u= <4,5> and v= <0,-1>

2v = 2*<0,-1> = <0,-2>

5u = 5* <4,5> = <20,25>

2v+5u = <0,-2> + <20,25>

= <20,23>