(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Ifa= <3,0,-1> find the vectorbsuch that compaB = 2

2. Relevant equations

None.

3. The attempt at a solution

[tex]|a| =\sqrt{3^2 + 1^2} = \sqrt{10}[/tex]

compaB = [tex]\frac{ a\cdot b}{|a|}[/tex]

[tex]2 = \frac{3(b1) - 1(b3)}{\sqrt{10}}[/tex]

[tex]2\sqrt{10} = 3(b1) - 1(b3)[/tex]

I dont know what to do from here

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Scalar projection of b onto a (vectors)

**Physics Forums | Science Articles, Homework Help, Discussion**