We have3-dimensional vectors

?x1=????a1?a2?a3???????

and

?x2=????a1??a2?a3???????

What is the signed magnitudec of the projection?P?x1?x2?

of?x1? onto ?x2? ?

More precisely, letu be the unit vector in the direction of the correct choice above, find a numberc such that?P?x1?x2? = cu

?

Recall from linear algebra the definition of the projection of one vector onto another. As 611 01 before, we have 3dimensional vectors x\") = a2 and 36(2) = a2 a3 03 Which of these vectors is in the same direction as the projection of x\") onto x9)? What is the signed magnitude c of the projection px(1)_,x(2) of x\") onto x0)? More precisely, let u be the unit vector in the direction of the correct choice above, find a number c such that Px(1)>x(2) = cu