Question

Find the unit vector that has the same direction as the vector v. v = 3i + j

Answer 1

the unit vector with the same direction as v can be found it v divided by its magnitude

Answer 2

So it should be v/abs(v)
(3i + j)*(1/abs(v))
(3i + j)/(3^2+1^2)^(1/2)
3i/(10)^(1/2) + j/(10)^(1/2)
or (3i + j)/(10)^(1/2)

Answer 3

A. u =3/sq rt of 10 i + 1/sq rt of 10 j
B. u = 3/sq rt of 11 i + 1/sq rt of 11 j
C. u = 3sq rt of 10 i + sq rt of 10 j
D. u = 10/sq rt of 3 i + sq rt of 10 j

Answer 4

\[unit V= \frac{ 3i+j }{ \sqrt {3^2+1^2} }=\frac{ (3i+j) }{ \sqrt{10} }\]

Answer 5

A

Answer 6

thank you so much

Answer 7

;) keep rocking