Chapter 8 Flashcards
1
Q
Magnitude formula
A
Square root p^2 and q^2
Can be extended for 3D
2
Q
Scalar product
De). (Fg
A
= df + eg
3
Q
Angle between 2 vectors
A
A.b = ab cos@
Where ab is the magnitude
4
Q
Perpendicular or orthogonal vector…
A
Scalar product I’d zero angle is 90
5
Q
Matrix rule identity matrix
A
Diagonal numbers e.g if swap them round
6
Q
How to transpose a matrix
A
Swap the rows and columns
7
Q
Determinant formula
A
DetA = ad-bc
8
Q
Inverse formula
A
A-1 = 1/detA (d -b
-c a)
9
Q
Singular
A
Determinant equals zero
