Question

Find the inner product for (3,5) (4,-2)and state whether the vectors are perpendicular.


a.


1; no


c.


2; no




b.


1; yes


d.


2; yes

Answer 1

The inner product is just the dot product.
Do you know how to take the dot product of these two vectors?

Answer 2

nope @surry99

Answer 3

u = (u1, u2) = (3,5)
v = (v1, v2) = (4, -2)
then the dot product is:
u.v = u1*v1 + u2* v2

for the vectors to be perpendicular, u.v must equal zero