Main Subjects Flashcards
1
Q
What is the formula for the dot product?
A
â • û = a1u1+a2u2+a3u3
2
Q
What’s the result of a dot product?
A
A scalar meaning a number
3
Q
Two vectors a and b are orthogonal if and only if?
A
a • b = 0
meaning a1b1+a2b2+a3b3=0
4
Q
What is the formula for the cross product?
A
Matrix
5
Q
What’s the result of a cross product?
A
A vector
6
Q
What do I get If a cross product two vectors?
A
Another vector that is orthogonal to them
7
Q
What is the synonymous of lenght of vector?
A
Magnitude
8
Q
What’s the formula of the magnitude of a vector?
A
9
Q
There are two notations when given result of a vector, what are they?
A
=i+j+k
or
=<x,y,z>
10
Q
What’s the formula for the unit vector?
A
