Question

let ( u = (3,4) ). what is ( 3u )?
( (6,7) )
( (6,12) )
( (9,7) )
( (9,12) )

Explanation:

Step1: Multiply the first component

Multiply the first component of the vector \(u=\langle3,4
angle\) by \(3\).
\(3\times3 = 9\)

Step2: Multiply the second component

Multiply the second component of the vector \(u=\langle3,4
angle\) by \(3\).
\(3\times4=12\)
So, \(3u=\langle9,12
angle\)

Answer:

D. $\langle9,12
angle$