how do i do this please xx
These are very basic practice problems. You will have to show some familiarity with them before you can move on.
Hints:
ai) Dot Product
aii) Cross Product
b)
If Z = a + bi
Z^2 = (a^2 - b^2) + 2abi
Z-bar = a - bi (The conjugate)
c) Factor and use the quadratic formula.
Hello, Amanda!
Here's the first one . . .
We have: .a) Condider the following position vectors: .
(1) Find the angle between the two vectors.
(2) Find a vector perpendicular to both vectors.
(1) We're expected to know this formula: .
So we have: .
. . Therefore: .
(2) We're expect to know that a vector perpendicular to two vectors
. . .is the cross product of the two vectors.
We have: .
. . Therefore: .