Chapter 11.3, Problem 3E

Finding Dot ProductsIn Exercises 3–10, find

(a) $u\cdot v$

(b) $u\cdot u$

(c) ${\Vert v\Vert }^2$

(d) $(u\cdot v)v$, and

(e) $u\cdot (3v).$

$u=\langle 3,4\rangle ,v=\langle -1,5\rangle$