Vectors Flashcards
1
Q
Magnitude of vector
A
sqrt(x^2+y^2+z^2)
2
Q
Unit vector
A
v/IvI
3
Q
v•w
A
xx+yay+zz
4
Q
v•w=0
A
Perpendicular
5
Q
Scalar projection of v onto u
A
uv/IuI
6
Q
Vector projection of v onto u
A
uv/IuI^2*u
7
Q
If VXW=0
A
Vectors parallel
8
Q
Area of parallelogram
A
IuXvl
9
Q
Volume vectors
A
a•(bxc)
10
Q
Equation of a line
A
Point+ parallel vector
11
Q
Parametric equation of a line
A
x=x+ta
y=y+tb
z=z+tc
12
Q
Equation of a plane and parts to get it
A
Point and perpendicular vector, a(x-x)+b(y-y)+c(z-z)=0
