Question

Find the magnitude of the given vector:
1. ⃗=3−2+5
2. ⃗=4−5+2
3. ⃗=−3

Answer 1

Answer:

1. =(38)½, 2. =3(5)½, 3. =3

Explanation:

1. | | ={3²+(-2)²+5²}½

= {9+4+25}½

=(38)½

2.| | = {4²+(-5)+2²}½

={16+25+4}½

={45}½

=3(5)½

3. | | = {(-3)²}½

=(9)½

=3