Question

Find the inner product for (-4,9,8) . (3,2,-2) and state whether the vectors are perpendicular.

a
-10; no
c.
10; no
b.
-10; yes
d.
10; yes

Answer 1

-10; no

Explanation:

-4*3 + 9*2 + 8*-2 = -10

-10 does not equal 0 so it is not perpendicular