Vectors

Question 1

When multiplying vectors…

Answer 1

I-j+k

Question 2

Area of triangle

Answer 2

1/2 |AB x BC|

Question 3

|u x v|=

Answer 3

|u||v|sina
Area of parallelogram with sides u,v

Question 4

How to find an equation of a plane

Answer 4

1) arb M
2) VM->
3)dot product VM-> with vector product

Question 5

Determinants:

Answer 5

All pluses